How do i know if my gerbil is pregnant and not just fat?

Question

When I first got her, my gerbil Zoey(girl) was way smaller than my other gerbil Jack.(boy) now I have had her for about 3 months and she is way bigger then Jack. Is she just fat or pregnant?

Answer 1

most likely the gerbil is just growing, because it was probably a baby when you got it. fat gerbils sides dont stick out like pregnant one, and you should go on google images to check.