What is the timing of offspring in animals?: 1 cat 2 bears 3 whales 4 mice 5 people

To begin with, it must be said that in nature often the period of bearing pups (children) does not last exactly as long as they write everywhere, and all the data are approximate. For example, a person does not necessarily have exactly 9 months.
1) The timing of the appearance of offspring in a cat is from 58 to 72 days.
2) In a bear, everything depends on the species, but in general, from 7 to 9 months.
3) The whale has about a year
4) In mice from 17 to 24 days
5) In humans, approximately 9 months