They aren't.
not that many
7
usually have one joey (baby kangaroo) per year
Two to three.
they have 0
approx. 253,539 per year
Ground squirrels have one litter per year that usually have nine babies.
4 or 5
Female squirrels have one litter per year and usually have 9 babies. That is all I know on that one. JKams Female squirrels can have 2 litters per year with 1-4 babies per litter.
It gets 5000 babies per year
Fack You and your moma
Estimated to be ~300,000
a sea otter can have 1 baby per year.