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My female rats are losing weight but eating. Do they need vitamins?

Updated On September 23rd, 2025

Pet's info: Small Animal | Unknown - Small Animal | Female

I have 2 girl rats and a boy rat. The boy is currently in a separate cage because we have yet to go get him neutered. A few days out of the week i let them roam around & let them play with each other making sure l keep a close eye to what’s happening. Well i got the girls 2 months ago & they’ve been losing weight instead of gaining. They eat like normal, play like normal, & they are still grooming themselves. What do i do? Any vitamins i should give them?

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1 Answer

Most Helpful Answer

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Answered By Mariya Gugel, DVM

Veterinarian

Published on December 15th, 2017

Thank you for using Petco Pet Education Center, formerly Petcoach! Your new pets are so precious! Female rats do tend to be a little smaller than males, but I agree that your girls are a little bit thin. I’m not sure how old they are, as juveniles can be a little smaller. I recommend making sure they have plenty of pelleted food formulated for rats and plenty of water. There are many supplements available in pet stores for rats and mice, some of which can be added to the water or food as well as separate gel type diets. In my experience, rats tend to love Cheerios as treats. You should also keep an eye on their stool to make sure it is consistently formed. I hope this helps!

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