RimWorld Animal Gestation Comparison (Pregnancy Days)
Compare 14 RimWorld animal gestation days from official wiki: chicken 1, goat 5.61, muffalo 6.66, husky 10, elephant 13.32 and thrumbo 20 listed here.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Chicken Shortest here. Lays eggs, no live birth. | 1 days | Egg layer, maturity 12 days | RimWorld Wiki List of animals/Additional table: Chicken Gestation Period 1 day |
| Goose 1 day over chicken. Egg layer. | 2 days | Egg layer, maturity 12 days | RimWorld Wiki List of animals/Additional table: Goose Gestation Period 2 days |
| Cassowary Ties emu. Bird group. | 3.33 days | Tropical bird, aggressive | RimWorld Wiki List of animals/Additional table: Cassowary Gestation Period 3.33 days |
| Emu Ties cassowary at 3.33. | 3.33 days | Arid bird, fast runner | RimWorld Wiki List of animals/Additional table: Emu Gestation Period 3.33 days |
| Goat Milk every 3 days. Faster than sheep. | 5.61 days | Milk animal, trader only | RimWorld Wiki Goat page: Gestation Period 5.61 days |
| Pig Litter 1.318 average. Food hog. | 5.66 days | Farm omnivore, fast breeder | RimWorld Wiki List of animals/Additional table: Pig Gestation Period 5.661 days |
| Sheep Ties pig at 5.661. Wool source. | 5.66 days | Wool and milk, docile | RimWorld Wiki List of animals/Additional table: Sheep Gestation Period 5.661 days |
| Deer Ties sheep tier. Wild births. | 5.66 days | Wild herbivore, hunted | RimWorld Wiki List of animals/Additional table: Deer Gestation Period 5.661 days |
| Alpaca Pack eligible. Wool every 15 days. | 6.66 days | Wool pack animal, caravan | RimWorld Wiki List of animals/Additional table: Alpaca Gestation Period 6.66 days |
| Muffalo Pack eligible. Classic herd animal. | 6.66 days | Wool and milk, cold biome | RimWorld Wiki List of animals/Additional table: Muffalo Gestation Period 6.66 days |
| Horse Ties muffalo. 5.8 move speed. | 6.66 days | Fast pack animal, ridable | RimWorld Wiki List of animals/Additional table: Horse Gestation Period 6.66 days |
| Husky Litter 1.721 average. Trainable. | 10 days | Haul and rescue dog | RimWorld Wiki List of animals/Additional table: Husky Gestation Period 10 days |
| Elephant Ties megasloth tier. 240 kg mass. | 13.32 days | Heavy hauler, strong fighter | RimWorld Wiki List of animals/Additional table: Elephant Gestation Period 13.32 days |
| Thrumbo Longest here. Twenty chickens per one thrumbo. | 20 days | Rare event animal, horn and fur | RimWorld Wiki Thrumbo page: Gestation Period 20 days |
About this converter
RimWorld live birth times run from 1 day for chickens to 20 days for thrumbos in the base table. Geese sit at 2. Cassowaries and emus sit at 3.33. Goats sit at 5.61 with milk every 3 days. Pigs, sheep and deer sit at 5.661. Alpacas, muffalos and horses sit at 6.66 with pack ability. Huskies sit at 10 with haul training. Elephants sit at 13.32 with 240 kg adult mass. Thrumbos sit at 20, cut from 60 in version 1.3. That makes one thrumbo equal twenty chickens of pregnancy time.
How to use it
Pick two animals and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. One box holds a count of the first animal, one holds the matching count of the second, one holds total days. Try thrumbo at 20 against chicken at 1 for the widest gap, then muffalo at 6.66 against goat at 5.61. Click a table row to load that entry as Entry A with amount 1.
Values pin the RimWorld Wiki List of animals/Additional gestation column plus Goat and Thrumbo pages. Megascarab and Megaspider have no gestation value and stay out. Egg layers use the same column: chicken 1, duck 1, goose 2. Herbivore times were cut in 1.3, with thrumbo 60 down to 20 noted on its page. Litter size rides in context where it matters: pig 1.318, husky 1.721. Malnutrition or injury can cause miscarriage in game, which sits outside base day math.
FAQ
What is the shortest gestation here?
Chicken at 1 day. It lays eggs. Goose follows at 2 days.
How long is muffalo pregnancy?
6.66 days. Alpaca and horse match it. Pack ability is shared by those three.
How long is thrumbo pregnancy?
20 days. It was 60 days before version 1.3. It is the longest here.
Where are these numbers from?
RimWorld Wiki List of animals/Additional gestation column, plus Goat and Thrumbo pages.
Sources
- RimWorld Wiki List of animals/Additional table: Gestation Period column (Alpaca 6.66, Cassowary 3.33, Emu 3.33, Pig 5.661, Sheep 5.661, Deer 5.661, Muffalo 6.66, Horse 6.66, Husky 10, Elephant 13.32, Chicken 1, Goose 2)
- RimWorld Wiki Goat page: Gestation Period 5.61 days, Milk Amount 12, Milking Interval 3 days
- RimWorld Wiki Thrumbo page: Gestation Period 20 days, Version history 1.3 change 60 to 20 days
- RimWorld Wiki Animals page: gestation time stat and miscarriage rules
Last verified: 2026-10-15 · 14 entries
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