2 of the rats I have are from a rehoming and are supposedly ~1 year old. Both were originally from Petco or PetSmart and were adopted together. However, when I've tried to age them from guides, there's different results. One of my sweet babies has fur loss, difficulty moving, and is skinny (she does eat). The other seems in prime condition- she has that characteristic "chonk" to her frame, is active and explorative, and has a smooth coat. Could there be that much of an age-gap between pet store feeders? If she's unwell, how can I help her?
