For example , a cat 's gestation normally takes 58 -- 65 days while an elephant 's takes nearly 2 years ( 21 months ) .
Smaller species normally have a shorter gestation period than larger animals .
A cat 's gestation normally takes 58 -- 65 days while an elephant 's takes nearly 2 years ( 21 months ) .
Smaller species normally have a shorter gestation period than larger animals .