Gestation, Incubation, and Longevity of Selected Animals
Updated February 21, 2017 | Factmonster Staff 
| Animal | Gestation or incubation, in days (average) | Longevity, in years (record exceptions) |
|---|---|---|
| Ass | 365 | 18–20 (63) |
| Bear | 180–2401 | 15–30 (47) |
| Cat | 52–69 (63) | 10–12 (26+) |
| Chicken | 22 | 7–8 (14) |
| Cow | 280 | 9–12 (39) |
| Deer | 197–3001 | 10–15 (26) |
| Dog | 53–71 (63) | 10–12 (24) |
| Duck | 21–351 (28) | 10 (15) |
| Elephant | 510–7301 (624) | 30–40 (71) |
| Fox | 51–631 | 8–10 (14) |
| Goat | 136–160 (151) | 12 (17) |
| Groundhog | 31–32 | 4–9 |
| Guinea pig | 58–75 (68) | 3 (6) |
| Hamster, golden | 15–17 | 2 (8) |
| Hippopotamus | 220–255 (240) | 30 (49+) |
| Horse | 329–345 (336) | 20–25 (50+) |
| Human | 253–303 | 652 (120) |
| Kangaroo | 32–391 | 4–6 (23) |
| Lion | 105–113 (108) | 10 (29) |
| Monkey | 139–2701 | 12–151 (29) |
| Mouse | 19–311 | 1–3 (4) |
| Parakeet (Budgerigar) | 17–20 (18) | 8 (12+) |
| Pig | 101–130 (115) | 10 (22) |
| Pigeon | 11–19 | 10–12 (39) |
| Rabbit | 30–35 (31) | 6–8 (15) |
| Rat | 21 | 3 (5) |
| Sheep | 144–1521 (151) | 12 (16) |
| Squirrel | 44 | 8–9 (15) |
| Whale | 365–5471 | n.a. |
| Wolf | 60–63 | 10–12 (16) |
1. Depending on kind.
Source: James G. Doherty, general curator, The Wildlife Conservation Society.
