However , growth does not necessarily determine the length of gestation for all species , especially for those with a breeding season .
For example , a cat 's gestation normally takes 58 -- 65 days while an elephant 's takes nearly 2 years ( 21 months ) .
Growth does not necessarily determine the length of gestation for all species , especially for those with a breeding season .
For example , a cat 's gestation normally takes 58 -- 65 days while an elephant 's takes nearly 2 years ( 21 months ) .