To breed tamed animals you have to have male and female of the same species. Both of the breeding pair need to be set to wandering and need to be in close proximity. You need the right skill for breeding animals. Tier 1 requires Breeding. Tier 2 need Breeding Tier 2. And the last one tier 3 with Breeding Tier 3

Temperature is important when breeding. The mating will not start or will be interrupted if the temperature is not correct for that species. When both pairs are set to wandering and in close proximity, but the mating doesn't start the female may have icon over her head. Icon with an island with snow on top means it's too cold to start mating, tropical island with palm trees suggest that it's too hot.

Temperature is also important after an egg is laid or when the mother has given birth in order to hatch the egg and grow the animal into maturity; the baby will lose health if the temperature is not suitable. Babies can't eat by themselves (ex: from a Feeding Trough.png Feeding Trough), they need to have edible food (for that species) in their inventory or they will starve to death. The inventory weight, stomach and health of the baby will be limited in function of its maturity; it requires a lot of care in its early days.

Breeding is a feature of ATLAS that allows players to breed improved creatures through eggs with non-mammals and gestation with mammals. Eggs do not have an owner, so it's possible to steal eggs laid by other survivors' animals.

Newborn creatures are simply claimed (imprinted on) and do not require the usual taming processes associated with wild creatures. Anyone can claim a newborn. This must be done promptly, along with feeding it, as babies can die quickly from hunger.

Breeding Mechanics[]

Preparing Mating[]

The first step of breeding is having two opposite sex creatures of the same species for mating. Most creatures can be bred; those few that cannot are listed at the bottom of this article. See Sterile Creatures for more information.

Mating Requirements[]

For creatures to successfully mate, both sexes must be:

  • within mating range of each other
  • wandering or set to mate(Enable Wandering must be enabled on both creatures)
  • not following anything (Disable Following on both creatures)
  • unburdened (the creatures must not be carrying so much weight they are unable to move)

Mating Range[]

The mating range varies between species and is loosely based on the size of the adult creature. Building a pen of a suitably small size to keep the wandering animals within mating range of each other is one common approach.

If you do not want to build a pen, you can use the "Whistle Stop (All)" command (u on PC). This halts all tamed animals within the area to stop moving if you have the appropriate command skill, even ones that are enabled to wander. It's best to use the whistle every time the creature starts to move again, or to prevent the animals from ever-moving, whistle constantly. While this method doesn't need a pen, it does need you or a company member to stay there and constantly whistle. This may be more helpful if one survivor is constantly whistling not to move, and another survivor enables the creatures nearby to wander and mate. In this way, you can achieve mass breeding in an area without ever building a pen, or moving creatures.

To initiate breeding of a pair by yourself, whistle both creatures to follow you, then enable wandering or mating. Then, disable following on both. This prevents them from walking around in the meantime.


When the above conditions are all met, a beating heart icon appears over the heads of the mating creatures, and a mating bar appears on the female's HUD (look at the female to reveal the HUD). The HUD also indicates which creature they are mating with. Ensure the mating animals remain close together, as otherwise the mating stops. Due to server lag and game mechanics, the mating bar does not continuously update in real time. Additionally, mating multiple females to a single male at the same time can make this worse. Patience is advised as the bar moves in leaps and bounds.

Once the mating bar is completed, non-mammalian females drop a single fertilized egg, and mammalian females start gestating.

Animals require a specific biome and temperature to mate. These numbers can be found on the animals pages.

Mating Wait Interval[]

Females cannot mate again until a mating wait interval has passed. This interval is indicated on their HUD. For mammals, the mating wait interval does not commence until after their gestation has completed.

Males can mate again immediately.


Main article: Incubation

The fertilized egg itself only begins Incubation when dropped into the world, not in Inventory. When dropped, a Fertilized Egg must be kept at a certain temperature range depending on the species (this also factors in insulation). If outside of this temperature range, incubation won't make progress, and it loses "Fertilized Egg Health" over time and is destroyed if this reaches zero. This is all indicated on the HUD when looking at a Fertilized Egg, along with its Parents.

Managing Temperature[]

The best method to ensure eggs are at an appropriate temperature for incubation is through insulation.

Use a heat source to regulate the egg's temperature. Torch.png Torch, Campfire.png Campfire, Ice Box.png Ice Box (removes heat) work well. However, they all have the downside of providing negative Heat Tolerance, making careful management necessary. You may need four or more torches, depending on the biome and the egg.

Since temperature gradients can be very extreme between regions it is very possible to have temperatures too high or low constantly when only relying on the weather. Early in the game, it is easier to find a biome that is colder and heat the egg with torches, rather than trying to cool down in a hot biome.

As Fertilized Eggs don't lose Egg Health in an inventory, and spoil incredibly slowly, you can keep them in your Inventory or in a preserving bag or food larder until able to achieve the appropriate temperature needed for Incubating. This can be very useful if you settled in a region with extreme temperatures as it's especially difficult to cool an egg in a hot biome without an air conditioner when it gets too hot.

mammals also need tempurature regulation while in the maturarion state. heat can be achieved via the Torch.png Torch, Campfire.png Campfire method but cooling is another story, best method is to sail the baby on a boat to the edge of to climates that match the animals needs. if its to hot in one move to the next and vice versa this will achieve perfect tempeature all the time - UPDATE: Ice Box can be used to cool babies (Must have ice as fuel and activated).


During gestation, females can consume up to twice the amount of food they would normally. Ensure the expectant mother has access to plenty of food during gestation to avoid losing the baby. NEEDS VERIFIED


Babies are born unclaimed, so a survivor must "claim" them immediately after birth by getting close to them, looking right at them, and pressing the "use" key e to imprint them, otherwise they can be claimed by other survivors.

If babies are not very promptly claimed and then fed they can quickly die from hunger.

Caring For Babies[]

Feed the Baby

Young animals take significant time and intensive care, especially during the "Baby" stage. Some animals on stock server settings will require several days to complete, others could be several hours. You can keep fertilized eggs in a Preserving Bag.png Preserving Bag or Food Larder.png Food Larder, but beware they will eventually spoil. Mammals will gestate and then drop a live animal, once mating is complete there is no stopping or pausing the arrival of the baby.

New babies are set to wandering and can be claimed by ANY person, who ever claims the baby will be imprinted on that baby. New babies have extremely low health, carrying capacity and food, so players need to hand feed them in their first moments of life, or they'll soon die. The creature must be fed by adding food to their inventory. Once they reach 10% of their maturation they will enter the Juvenile phase allowing them to eat from a Feeding Trough.png Feeding Trough. The maturation progress is shown when looking at the creature.

At 50% the animal will enter the final phase Adolescent.

Babies dynamically gain more HP, food capacity, and carrying capacity as they mature over time. While an animals are maturing they will eat a piece of food when they have enough room for that food. Example. A berry provides 2 food. So when a baby has room for 2 food it will eat a berry . A Potato.png Potato provides 60 food. Therefore, a baby only eating Potato.png potato will eat less Potato.png potato than Berry.png berries.

Babies are not mountable and flee from fights.

It takes a long time for babies to mature; breeding should only be attempted if you or your tribe have the time. Normally as the baby grows, you will be able to leave the baby alone for longer and longer periods of time, as of v18.9 babies will continue to eat from inventory/trough when out of rendering distance. If you will be imprinting, the baby will either want a cuddle or to go for a walk every so often the number will be displayed over the animals head.

Avoid the cold[]

Baby is freezing

An important step to maintaining breeding is preparing a space prior to starting the process. It is suggested for most animals that are capable of breeding to use a colder climate or have the baby on a ship and shift between 2 zones to avoid the heat, you can use Torch.png Torch , Campfire.png Campfire or Penguin to heat them effectively

One method is the use of campfires. They provide approximately 130 Hypothermia insulation. This method requires room to have several Campfire.png campfires placed. You would then light fires as needed to keep your animal from having the blue cold emblem.

Another method is to use a system of torches bound to nearby levers to allow more precise control over the adjustment of the temperature without manually turning on or off individual torches. Torch.png Torch heat provide approximately 40 hypothermia insulation and are cost-efficient in resources. A Torch.png torch will burn for 6 hours and 40 minutes real time before it's durability reaches 0, assuming the torch is not crafted from a blueprint.

You can also use the Penguin to mitigate the heat. They have an insulation (AoE) Buff. The AoE scales with the Creature level and will help with high temperatures. (Penguins AoE insulation does not currently work with babies.)

- v104.61 patch

Creature babies no longer require the desired temperature after they reach 10% maturity

Avoid the heat[]

Baby's too hot

Ice Box will remove the heat debuff on your baby.

Some people try to cool them down with water from the Bucket.png Bucket but it doesn't work very well.

You are most likely better off taking your little one with you on your ship and move for the maturing process to a colder area.

But be carful of natural hazards like the storm, since it could potentially fly your baby off the ship or it may glitch into the boat's structure and get stuck/unreachable.

Sterile Creatures[]

All tameable creatures are breedable except for: Giant Crab, Cyclops, Drake, Fire Elemental, Gorgon

Times for Breeding[]

Breeding Tier 1[]

Tier Creature Possible yet Food 1st state Food 2nd state Needed Temperature
1 Chicken Yes Berry.png Berries Fruits ?
1 Monkey Yes Berry.png Berries Berries ?
1 Parrot Yes Berry.png Berries Fruits Hardtack.png Hardtack ?
1 Rabbit Yes Berry.png Berries Carrot.png Carrot ?
1 Sheep Yes Berry.png Berries Medicinal Herb ?

Breeding Tier 2[]

Tier Creature Possible yet Food 1st state Food 2nd state Needed Temperature
2 Bear Yes Berry.png Berries Honey.png Honey / Berry.png Berries / Fruits / Vegetables / Milk.png Milk 7°C-14°C
2 Bull Yes Berry.png Berries Rushes.png Rushes / Berry.png Berries / Fronds.png Fronds / Vegetables / Fruits
2 Cow Yes Berry.png Berries Fronds.png Fronds / Berry.png Berries / Vegetables / Fruits ---
2 Crow Yes Vegetables / Berry.png Berries Earthworms.png Earthworms / Berry.png Berries / Fruits Egg 36°C - 45°C, Baby 14°C - 30°C
2 Horse Yes Vegetables / Fruits / Berry.png Berries Vegetables / Fruits / Sugar Cane.png Sugar Cane - - -
2 Ostrich Yes Berry.png Berries Chili.png Chili / Vegetables / Fruits / Berry.png Berries ---
2 Pig Yes Berry.png Berries Maize.png Maize / Vegetables / Fruits - - -
2 Seagull Yes Fish Meat.png Fish Meat Prime Fish Meat.png Prime Fish Meat
2 Vulture Yes Rotten Meat.png Rotten Meat Earthworms.png Earthworms ---
2 Wolf Yes Animal Meat.png Animal Meat Prime Animal Meat.png Prime Animal Meat / Bone.png Bone ---
2 Penguin Yes Fish Meat.png Fish Meat Prime Fish Meat.png Prime Fish Meat ?

Breeding Tier 3[]

Tier Creature Possible yet Food 1st state Food 2nd state Needed Temperature Time to adult
3 Elephant Yes Berry.png Berries Wheat.png Wheat / Vegetables/ Fruits 27c - 45c 72h
3 Giant Crab No ? ? - -
3 Giant Tortugar Yes Chili Chili - -
3 Giraffe Yes Vegetables / Fruits Beet.png Beet / Vegetables / Fruits - -
3 Lion Yes Animal Meat.png Animal Meat Prime Animal Meat.png Prime Animal Meat - -
3 Rhino Yes Berry.png Berries Turnip.png Turnip / Vegetables / Fruits - -
3 Tiger Yes Animal Meat.png Animal Meat Prime Animal Meat.png Prime Animal Meat / Animal Meat.png Animal Meat - -
3 Razortooth Yes Fish Meat.png Fish Meat Jac's Beef Buns.png Jac's Beef Buns, Cooked Prime Fish Meat.png Cooked Prime Fish Meat - -
3 Shieldhorn Yes Vegetables Vegetables - -


Breeding Tier 3 is possible.



Patch History[]

Patch Notes
18.90 Fixed an issue with babies not eating from inventory/troughs when in stasis.
18.84 Baby creatures will no longer take into account the temperature alterations from coldfront and heatwave


fr:Reproduction it:Allevamento pl:pt-br: