Gestational Duration By Species
The following table shows gestational or incubation duration in days by gestational age (from last menstrual period)
| Species/group | Range | On average | Reference for average range |
|---|---|---|---|
| Donkey | 365 | ||
| Bear | 180–240 | ||
| Cat | 52–69 | 63 | |
| Chicken | 22 | ||
| Cow | 280 | ||
| Deer | 197–300 | ||
| Dog | 53–71 | 63 | |
| Duck | 21–35 | 28 | |
| Elephant | 510–730 | 624 | |
| Fox | 51–63 | ||
| Goat | 136–160 | 151 | |
| Groundhog | 31–32 | ||
| Guinea pig | 58–75 | 68 | |
| Hamster, golden | 15–17 | ||
| Hippopotamus | 220–255 | 240 | |
| Horse | 329–345 | 336 | |
| Human | 253–303 | ||
| Kangaroo | 32–39 | ||
| Lion | 105–113 | 108 | |
| Monkey | 139–270 | ||
| Mouse | 19–31 | ||
| Pig | 101–130 | 115 | |
| Rabbit | 30–35 | 31 | |
| Rat | 21 | ||
| Sheep | 144–152 | 151 | |
| Squirrel | 44 | ||
| Whale | 365–547 | ||
| Wolf | 60–63 |
Read more about this topic: Pregnancy (mammals)
Famous quotes containing the words duration and/or species:
“What matters it that man should have a little more knowledge of the universe? If he has it, he gets little higher. Is he not always infinitely removed from the end, and is not the duration of our life equally removed from eternity, even if it lasts ten years longer?”
—Blaise Pascal (16231662)
“Single-mindedness is all very well in cows or baboons; in an animal claiming to belong to the same species as Shakespeare it is simply disgraceful.”
—Aldous Huxley (18941963)