All 59 Critters and Their Drops in Oxygen Not Included

Critters are the animals that share the world of Oxygen Not Included with your Duplicants. They come in land, flying and water types, and most can be caught, tamed and raised on a ranch for eggs, meat, materials, light or power. Some are easy to live with, while a few are dangerous and need careful handling. Knowing what each kind eats, how it behaves and how to tame it will help you decide which critters belong in your colony.

Hatch

A burrowing critter that turns several food and mineral feeds into Coal.

Diet

Food, raw minerals, organic matter, and metal ore

Products

Coal

Drops

Meat (3,200 kcal)

Found

Sandstone Biome

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Hatchling

Pack

Base game

Stone Hatch

A rock-eating Hatch morph that produces Coal.

Diet

Sedimentary rock, igneous rock, obsidian, granite, basalt, and metal ores

Products

Coal

Drops

Meat (3,200 kcal)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Stone Hatchling

Pack

Base game

Sage Hatch

An organic matter eater that produces Coal.

Diet

Dirt, Slime, Algae, Fertilizer, Polluted Dirt, Polluted Mud, and food

Products

Coal

Drops

Meat (3,200 kcal)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Sage Hatchling

Pack

Base game

Smooth Hatch

A Hatch morph that refines metal ore into refined metal.

Diet

Metal ores, Gold Amalgam, and Wolframite

Products

Refined metal; the metal depends on the ore

Drops

Meat (3,200 kcal)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Smooth Hatchling

Pack

Base game

Shine Bug

A small flying critter that gives light and decor when happy.

Diet

Phosphorite

Products

Light, +30 Decor, and 60 rads per cycle; eggs contain Resin

Drops

-

Found

Sandstone Biome, Radioactive Biome (Spaced Out!), Nectar Biome (The Frosty Planet Pack), Forest Biome

Ranch Space

6 tiles each; 16 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Shine Nymph

Pack

Base game

Sun Bug

A Shine Bug morph that glows orange when happy.

Diet

Phosphorite

Products

Orange light and decor when happy; 60 rads per cycle; eggs contain Resin

Drops

-

Found

-

Ranch Space

6 tiles each; 16 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Sun Nymph

Pack

Base game

Royal Bug

A Shine Bug morph that glows purple when happy.

Diet

Phosphorite

Products

Purple light and decor when happy; 60 rads per cycle; eggs contain Resin

Drops

-

Found

-

Ranch Space

6 tiles each; 16 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Royal Nymph

Pack

Base game

Coral Bug

A Shine Bug morph that glows pink when happy.

Diet

Phosphorite

Products

Pink light and decor when happy; 60 rads per cycle; eggs contain Resin

Drops

-

Found

-

Ranch Space

6 tiles each; 16 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Coral Nymph

Pack

Base game

Azure Bug

A Shine Bug morph that glows blue and eats Refined Phosphorus.

Diet

Phosphorite and Refined Phosphorus

Products

Blue light and decor when happy; 60 rads per cycle; eggs contain Resin

Drops

-

Found

-

Ranch Space

6 tiles each; 16 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Azure Nymph

Pack

Base game

Abyss Bug

A dark Shine Bug morph that eats Abyssalite and Refined Phosphorus.

Diet

Abyssalite and Refined Phosphorus

Products

No light; 60 rads per cycle; eggs contain Resin

Drops

-

Found

-

Ranch Space

6 tiles each; 16 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Abyss Nymph

Pack

Base game

Radiant Bug

A Shine Bug morph that emits extra-bright light when happy.

Diet

Diamond

Products

Extra-bright light and decor when happy; 60 rads per cycle; eggs contain Resin

Drops

-

Found

-

Ranch Space

6 tiles each; 16 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Radiant Nymph

Pack

Base game

Pip

A nonhostile critter that eats plants, produces Dirt, and buries seeds.

Diet

Arbor Tree and Thimble Reed

Products

Dirt; buries seeds in suitable soft tiles

Drops

Meat (1,600 kcal)

Found

Barren Biome, Forest Biome

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Pipsqueak

Pack

Base game

Cuddle Pip

A Pip morph that hugs nearby eggs and briefly gets a stronger effect when hugged by a Duplicant.

Diet

Arbor Tree and Thimble Reed

Products

Dirt; hugs eggs, speeding up incubation

Drops

Meat (1,600 kcal)

Found

-

Ranch Space

4 tiles each; 24 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Cuddle Pipsqueak

Pack

Base game

Drecko

A grazing critter that grows shearable Reed Fiber in Hydrogen.

Diet

Pincha Pepperplant, Balm Lily, and Mealwood

Products

Phosphorite; Reed Fiber when sheared in Hydrogen

Drops

Meat (3,200 kcal)

Found

Jungle Biome, Rust Biome

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

10 to 60 °C

Baby Form

Drecklet

Pack

Base game

Glossy Drecko

A Drecko morph that grows Plastic scales in Hydrogen.

Diet

Mealwood and Bristle Blossom

Products

Phosphorite; Plastic when sheared in Hydrogen

Drops

Meat (3,200 kcal)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

20 to 50 °C

Baby Form

Glossy Drecklet

Pack

Base game

Pokeshell

A shell-bearing critter that eats waste and leaves a crushable molt.

Diet

Polluted Dirt, Rot Piles, and Slime

Products

Sand; Pokeshell Molt

Drops

Raw Shellfish (1,200 kcal); Pokeshell Molt (60 kg)

Found

Ocean Biome

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

0 to 40 °C

Baby Form

Pokeshell Spawn

Pack

Base game

Oakshell

A Pokeshell morph whose molt can be crushed into Wood.

Diet

Polluted Dirt, Rot Piles, and Slime

Products

Sand; Oakshell Molt

Drops

Raw Shellfish (1,200 kcal); Oakshell Molt (500 kg)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

0 to 40 °C

Baby Form

Oakshell Spawn

Pack

Base game

Sanishell

A Pokeshell morph that cleans germs from the liquid around it.

Diet

Polluted Dirt, Rot Piles, and Slime

Products

Sand; removes germs from liquid it inhabits

Drops

Raw Shellfish (4,000 kcal)

Found

Reef Biome (The Aquatic Planet Pack)

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

0 to 40 °C

Baby Form

Sanishell Spawn

Pack

Base game

Puft

An airborne critter that turns Polluted Oxygen into Slime.

Diet

Polluted Oxygen

Products

Slime

Drops

Meat (1,600 kcal)

Found

Marsh Biome

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

15 to 55 °C

Baby Form

Puftlet

Pack

Base game

Puft Prince

A Puft morph that excretes a solid from the gas it breathes.

Diet

Polluted Oxygen, Chlorine Gas, and Oxygen

Products

Slime, Bleach Stone, or Oxylite depending on the gas breathed

Drops

Meat (1,600 kcal)

Found

-

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

20 to 40 °C

Baby Form

Puftlet Prince

Pack

Base game

Dense Puft

A Puft morph that condenses Oxygen into Oxylite.

Diet

Oxygen

Products

Oxylite

Drops

Meat (1,600 kcal)

Found

-

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

0 to 60 °C

Baby Form

Dense Puftlet

Pack

Base game

Squeaky Puft

A Puft morph that turns Chlorine Gas into Bleach Stone.

Diet

Chlorine Gas

Products

Bleach Stone

Drops

Meat (1,600 kcal)

Found

Rust Biome

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

0 to 60 °C

Baby Form

Squeaky Puftlet

Pack

Base game

Pacu

An aquatic fish that can live in liquid and produces Polluted Dirt.

Diet

Algae, Seakomb, and seeds

Products

Polluted Dirt

Drops

Fish Fillet (1,000 kcal)

Found

Swampy Biome (Spaced Out!), Marsh Biome, Wetlands Biome (The Prehistoric Planet Pack)

Ranch Space

8 pool tiles each; 12 per 96-tile pool.

Comfortable Temperature

0 to 60 °C

Baby Form

Pacu Fry

Pack

Base game

Tropical Pacu

A brightly colored Pacu that lives in warm liquid pools.

Diet

Algae, Seakomb, and seeds

Products

Polluted Dirt; provides Decor in warm pools

Drops

Fish Fillet (1,000 kcal)

Found

Reef Biome (The Aquatic Planet Pack)

Ranch Space

8 pool tiles each; 12 per 96-tile pool.

Comfortable Temperature

30 to 80 °C

Baby Form

Tropical Fry

Pack

Base game

Gulp Fish

A cold-water Pacu morph that filters Polluted Water into Water.

Diet

Algae, Seakomb, and seeds

Products

Polluted Dirt; filters Polluted Water into Water

Drops

Fish Fillet (1,000 kcal)

Found

-

Ranch Space

8 pool tiles each; 12 per 96-tile pool.

Comfortable Temperature

-30 to 5 °C

Baby Form

Gulp Fry

Pack

Base game

Slickster

A heat-loving critter that turns Carbon Dioxide into Crude Oil.

Diet

Carbon Dioxide

Products

Crude Oil

Drops

Meat (3,200 kcal)

Found

Oily Biome

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

50 to 140 °C

Baby Form

Slickster Larva

Pack

Base game

Molten Slickster

A hot Slickster morph that turns Carbon Dioxide into Petroleum.

Diet

Carbon Dioxide

Products

Petroleum

Drops

Meat (3,200 kcal)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

100 to 200 °C

Baby Form

Molten Larva

Pack

Base game

Longhair Slickster

A Slickster morph that eats Oxygen and is friendly to nearby Duplicants.

Diet

Oxygen

Products

No oil product; has a long coat and is friendly to nearby Duplicants

Drops

Meat (3,200 kcal)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

0 to 50 °C

Baby Form

Longhair Larva

Pack

Base game

Shove Vole

A burrowing critter that eats Regolith, Dirt, and Iron Ore.

Diet

Regolith, Dirt, and Iron Ore

Products

Burrows through solid tiles

Drops

Meat (16,000 kcal)

Found

Regolith Biome (Spaced Out!), Space Biome

Ranch Space

0 tiles each; no room population cap.

Comfortable Temperature

-100 to 400 °C

Baby Form

Vole Pup

Pack

Base game

Delecta Vole

A Vole morph that grows shearable Tonic Root.

Diet

Regolith, Dirt, and Iron Ore

Products

Tonic Root grows on its body and can be sheared

Drops

Meat (8,000 kcal)

Found

-

Ranch Space

0 tiles each; no room population cap.

Comfortable Temperature

-100 to 100 °C

Baby Form

Delecta Vole Pup

Pack

Base game

Gassy Moo

An extraterrestrial grazer that produces Natural Gas and Brackene.

Diet

Gas Grass and Plant Husk

Products

Natural Gas; Brackene from milking

Drops

Meat (16,000 kcal)

Found

Moo Biome (Spaced Out!)

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

-50 to 50 °C

Baby Form

None (does not lay eggs)

Pack

Base game

Husky Moo

A Moo morph that produces Carbon Dioxide and Biodiesel.

Diet

Gas Grass and Plant Husk

Products

Carbon Dioxide; Biodiesel from milking

Drops

Meat (16,000 kcal)

Found

-

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

-50 to 50 °C

Baby Form

None (does not lay eggs)

Pack

Base game

Morb

A critter that appears in unhygienic places and cannot be ranched.

Diet

-

Products

Polluted Oxygen, often with Slimelung germs

Drops

Polluted Oxygen on death

Found

Jungle Biome

Ranch Space

Can't be ranched

Comfortable Temperature

30 to 100 °C

Baby Form

-

Pack

Base game

Plug Slug

A ceiling-dwelling critter that generates Power at night.

Diet

Metal ores and Refined Metals

Products

Hydrogen; generates Power at night

Drops

Meat (3,200 kcal)

Found

Swampy Biome

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Plug Sluglet

Pack

Spaced Out!

Smog Slug

A Plug Slug morph that absorbs gas and releases it into pipes while sleeping.

Diet

Metal ores and Refined Metals

Products

Hydrogen; absorbs gases and releases them into pipes

Drops

Meat (3,200 kcal)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

-10 to 40 °C

Baby Form

Smog Sluglet

Pack

Spaced Out!

Sponge Slug

A Plug Slug morph that absorbs liquid and releases it into pipes while sleeping.

Diet

Metal ores and Refined Metals

Products

Hydrogen; absorbs liquids and releases them into pipes

Drops

Meat (3,200 kcal)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

-10 to 40 °C

Baby Form

Sponge Sluglet

Pack

Spaced Out!

Sweetle

A Sulfur-eating critter that produces Sucrose and pollinates plants.

Diet

Sulfur

Products

Sucrose; pollinates nearby plants

Drops

Meat (1,600 kcal)

Found

Wasteland Biome

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Sweetle Larva

Pack

Spaced Out!

Grubgrub

A plant-tending critter that boosts growth and fruit size.

Diet

Sulfur and Sucrose

Products

Mud; pollinates plants and improves plant growth

Drops

Meat (4,800 kcal)

Found

-

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

10 to 40 °C

Baby Form

Grubgrub Wormling

Pack

Spaced Out!

Beeta

A hostile critter that gathers Uranium Ore for its hive.

Diet

Uranium Ore

Products

Delivers Uranium Ore to its hive; the hive makes Enriched Uranium

Drops

Nuclear Waste

Found

Radioactive Biome

Ranch Space

Can't be ranched

Comfortable Temperature

-50 to 0 °C

Baby Form

Beetiny (from a Beeta Hive)

Pack

Spaced Out!

Flox

A cold-weather grazer whose antlers can be sheared for Wood.

Diet

Pikeapple Bush, Pikeapple, Bristle Blossom, and Bristle Berry

Products

Dirt; antlers can be sheared for Wood

Drops

Meat (1,600 kcal)

Found

Ice Cave Biome

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

-30 to 10 °C

Baby Form

Flox Fawn

Pack

The Frosty Planet Pack

Shatter Flox

A Flox morph whose antlers can be sheared for Glass.

Diet

Pikeapple Bush, Pikeapple, Bristle Blossom, Bristle Berry, and Abyssalite

Products

Dirt; antlers can be sheared for Glass

Drops

Meat (1,600 kcal)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

-30 to 10 °C

Baby Form

Shatter Flox Fawn

Pack

The Frosty Planet Pack

Bammoth

A large grazer that produces Bammoth Patty and grows shearable Reed Fiber.

Diet

Plume Squash Plant, Plume Squash, Nosh Bean, Nosh Sprout, and Squash Fries

Products

Bammoth Patty; Reed Fiber when sheared

Drops

Meat (22,400 kcal)

Found

Cool Pool Biome

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

30 to 70 °C

Baby Form

Bammini

Pack

The Frosty Planet Pack

Regal Bammoth

A Bammoth morph that produces a Regal Bammoth Crest.

Diet

Plume Squash Plant, Plume Squash, Nosh Bean, Nosh Sprout, and Squash Fries

Products

Bammoth Patty; Regal Bammoth Crest

Drops

Meat (22,400 kcal)

Found

-

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

30 to 70 °C

Baby Form

Regal Bammini

Pack

The Frosty Planet Pack

Spigot Seal

A cold-climate critter that produces Ethanol and can drop Tallow when it dies.

Diet

Nectar and Sucrose

Products

Ethanol; Bonbon Tree Seed has a 20% chance per emission

Drops

Tallow (50 kg)

Found

Nectar Biome

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

-75 to 10 °C

Baby Form

Spigot Pup

Pack

The Frosty Planet Pack

Lumb

A plant-eating critter that produces Peat and knocks harvestable items from nearby plants.

Diet

Ovagro Fig, Bristle Berry, and Bog Jelly

Products

Peat; stomping near plants knocks harvestable items loose

Drops

Tough Meat (12 kg)

Found

Garden Biome

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

20 to 70 °C

Baby Form

Lumblet

Pack

The Prehistoric Planet Pack

Blum Lumb

A Lumb morph that produces Algae.

Diet

Ovagro Fig, Bristle Berry, and Bog Jelly

Products

Algae; stomping near plants knocks harvestable items loose

Drops

Tough Meat (12 kg)

Found

-

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

20 to 70 °C

Baby Form

Blumblet

Pack

The Prehistoric Planet Pack

Mimika

An airborne organism that helps nearby plants grow and later hardens into Mimillet.

Diet

-

Products

Spawned by Mimika Bud; hardens into Mimillet when its leaves dry

Drops

Mimillet (1 unit)

Found

Garden Biome

Ranch Space

Can't be ranched

Comfortable Temperature

10 to 45 °C

Baby Form

N/A (forms from Mimika Bud)

Pack

The Prehistoric Planet Pack

Rhex

A carnivore that eats smaller critters and produces Brine Ice.

Diet

Hatch, Pip, Shove Vole, Slickster, Drecko, Lumb, Dartle, and Divergent

Products

Brine Ice; tail feathers can be sheared for Feather Fiber

Drops

Tough Meat (5 kg)

Found

Feather Biome

Ranch Space

16 tiles each; 6 per 96-tile stable.

Comfortable Temperature

-50 to 15 °C

Baby Form

Rhex Baby

Pack

The Prehistoric Planet Pack

Dartle

A nonhostile critter that eats Dewdrips and produces Bleach Stone and Chlorine Gas.

Diet

Dewdrip

Products

Bleach Stone and Chlorine Gas

Drops

Meat (800 kcal)

Found

Feather Biome

Ranch Space

4 tiles each; 24 per 96-tile stable.

Comfortable Temperature

-40 to 20 °C

Baby Form

Dartlet

Pack

The Prehistoric Planet Pack

Jawbo

An aquatic carnivore that eats fish and produces Rust.

Diet

Pacu, other aquatic critters, Fish Fillet, and Cooked Seafood

Products

Rust

Drops

Jawbo Fillet (12,000 kcal)

Found

Wetlands Biome

Ranch Space

12 pool tiles each; 8 per 96-tile pool.

Comfortable Temperature

0 to 60 °C

Baby Form

Jawbo Fry

Pack

The Prehistoric Planet Pack

Gnit

A hostile airborne critter that can feed Lura Plants.

Diet

-

Products

-

Drops

-

Found

Wetlands Biome

Ranch Space

Can't be ranched

Comfortable Temperature

5 to 65 °C

Baby Form

Gnit Larva

Pack

The Prehistoric Planet Pack

Blowter

An aquatic critter that produces Oxygen after eating Waterweed leaves.

Diet

Waterweed and Lettuce

Products

Oxygen

Drops

Fish Fillet (1,000 kcal)

Found

Reef Biome

Ranch Space

8 pool tiles each; 12 per 96-tile pool.

Comfortable Temperature

0 to 60 °C

Baby Form

Blowter Fry

Pack

The Aquatic Planet Pack

Beakon

An aquatic critter that eats Phosphorite and Starnacle and gives off light when happy.

Diet

Starnacle and Phosphorite

Products

Lime; emits 5,000 Lux when happy

Drops

Fish Fillet (1,000 kcal)

Found

Reef Biome

Ranch Space

8 pool tiles each; 12 per 96-tile pool.

Comfortable Temperature

0 to 60 °C

Baby Form

Beakon Fry

Pack

The Aquatic Planet Pack

Seaquine

An aquatic critter that can be milked for Ovolene.

Diet

Pearl

Products

Slime; Ovolene from the Aquatic Milking Station

Drops

Fish Fillet (1,000 kcal)

Found

Reef Biome

Ranch Space

8 pool tiles each; 12 per 96-tile pool.

Comfortable Temperature

0 to 60 °C

Baby Form

Seaquine Fry

Pack

The Aquatic Planet Pack

Orehull

A shy aquatic critter that eats Kelpoles and can be sheared for Iron Ore.

Diet

Kelpole and Nori

Products

Polluted Mud; Iron Ore when sheared

Drops

Raw Shellfish (6,000 kcal)

Found

Kelp Forest Biome

Ranch Space

12 pool tiles each; 8 per 96-tile pool.

Comfortable Temperature

0 to 60 °C

Baby Form

Orehull Spawn

Pack

The Aquatic Planet Pack

Slogo

A salt-eating critter that produces Dirt and a shell molt.

Diet

Salt

Products

Dirt, Mucin, and Slogo Molt when happy

Drops

Meat (800 kcal)

Found

Beach Biome

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

5 to 75 °C

Baby Form

Slogo Baby

Pack

The Aquatic Planet Pack

Gildgo

A hot Slogo morph that eats Sulfur and produces Obsidian.

Diet

Sulfur

Products

Obsidian, Mucin, and Gildgo Molt when happy

Drops

Meat (800 kcal)

Found

-

Ranch Space

12 tiles each; 8 per 96-tile stable.

Comfortable Temperature

60 to 115 °C

Baby Form

Gildgo Baby

Pack

The Aquatic Planet Pack

Kelpole

A small aquatic critter that grows along Tower Kelp.

Diet

-

Products

Spawns along Tower Kelp; Nori is harvested from it

Drops

Nori (10 kg)

Found

Kelp Forest Biome

Ranch Space

Can't be ranched

Comfortable Temperature

10 to 45 °C

Baby Form

N/A (spawns along Tower Kelp)

Pack

The Aquatic Planet Pack

Glo Squid

A squid that eats Tublia, produces Abyssalite, and can be milked for Squid Ink.

Diet

Tublia

Products

Abyssalite; Squid Ink from milking

Drops

Calamari (9,600 kcal)

Found

Abyss Biome

Ranch Space

12 pool tiles each; 8 per 96-tile pool.

Comfortable Temperature

40 to 100 °C

Baby Form

Glo Squid Larva

Pack

The Aquatic Planet Pack

What Are Critters in Oxygen Not Included?

Critters are the non-Duplicant animals that roam the world you're building in, and they fall into three groups. Land critters walk or burrow, airborne critters float or fly, and aquatic critters live in water or other liquids. The base game has the first set, and the expansion packs add many more, including Plug Slugs, which need Spaced Out!. Some critters turn up on their own in the world, while others arrive as care packages from a Printing Pod.

What Critters Need to Stay Healthy

Every critter has a diet, a range of temperatures it can handle and a minimum amount of room. Wild critters can go without food, but a tame critter without enough food starves, loses happiness and dies after ten cycles. Temperatures outside its range cause frostbite or scalding and drag its happiness down as well.

Water matters just as much. Aquatic critters such as Pacu flop helplessly when there isn't enough liquid around them, and most other critters drown if they stay submerged in liquid they can't swim through for about 75 seconds. Happiness has four levels, from Miserable up to Happy, and it changes how quickly critters burn through food and how often they breed. Crowding, where too many critters share a space, brings a happiness penalty, so each room needs enough space for its residents.

Are Critters Dangerous?

Most critters leave Duplicants alone, and many only fight back once they're attacked. A few are a real threat. Pokeshells turn aggressive when they're guarding their eggs, and a group of them can beat a Duplicant to death. Beetas attack anything that isn't a Beeta, and Gnits are hostile flying critters.

Stone and Smooth Hatches hit hard enough to seriously injure or kill a lone Duplicant, so it's safer to wrangle them than to fight them. Morbs flee when attacked, but their germs carry Slimelung, which is a serious disease risk for Duplicants.

How to Catch Critters

Land critters are caught in a Critter Trap, a reusable trap that snares any non-flying critter that walks into it. Flying critters need an Airborne Critter Trap instead. Arming a trap takes a Duplicant with the Critter Ranching skill, and that same skill lets a Duplicant wrangle a critter directly without a trap.

Once a critter is caught, Duplicants carry it to a Critter Drop-Off, which releases it back into the world. You can cap how many critters the Drop-Off's room will hold. If eggs keep hatching past that cap, a Critter Pick-Up handles the extra critters.

How to Tame Critters and Start a Ranch

Most wild critters become tame after they're groomed at a Grooming Station two cycles (game days) in a row, and once they're tame, they stay that way. The Grooming Station is the core of a Stable, an enclosed room set up with a Ranching Building. Pacus and Jawbos are the exception, since they're tamed by feeding instead. Taming matters because a wild critter lays about one egg in its whole life, while a tame one that lives a full life can lay around fifteen. Eggs keep their parent's status, so breeding from tame critters keeps your line tame.

Every ranching task, including grooming, shearing, wrangling and moving critters, needs a Duplicant with the Critter Ranching skill. Each grooming session also gives a short happiness boost, which helps with breeding. Ranching runs into one common problem: eggs count toward a Stable's space. Too many eggs make it Cramped, and critters stop laying until the eggs are removed or hatch. Incubators can help a new ranch get going, since a rancher can lullaby an egg inside one to make it hatch up to five times faster. They don't increase the number of eggs, though, and filling a new ranch can still take 50 cycles or more.

Which Critters Are Worth Keeping?

The game points to Hatches, Shine Bugs and Pufts as the first critters to ranch, and they're a sensible place to start. Hatches are the food and coal critters. They eat solid minerals and turn much of it into coal, and a happy Hatch yields enough raw meat that roughly two per Duplicant covers their food. Smooth Hatches are the exception: they eat metal ore and give back refined metal.

Pufts are the air handlers. They breathe in gas and breathe out solids, so they can turn polluted oxygen into slime, oxygen into oxylite and chlorine into bleach stone. Oxylite can serve as a rocket oxidizer, which makes Dense Pufts especially useful. Shine Bugs are the light critters. They're fairly rare, but they give steady light and decor to the rooms around them, and their eggs can be cracked open for resin.

Pacu are the water-side food source. They turn algae and seeds into polluted dirt and leave fish fillets behind when they die. Plug Slugs hang from ceilings at night and power the exposed wires nearby, and Divergent critters boost any plants they touch.

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