Guinea pigs usually have a lot of hair, and this sheds and regrows just as human hair does. During the springtime, you may notice that your guinea pig is shedding a lot more than usual. This is normal, as your guinea pig is getting rid of spare fur in order to remain nice and cool in the summer. If you notice that your guinea pig is shedding excessively, then this could be the result of a skin problem or parasite. Check over your guinea pig to make sure they’re healthy and not unwell or infested with some form of parasite. Have a look at our Guinea Pig Health sections for help and advice with this.

Guinea pigs shed more hair in the spring
If you brush your guinea pigs outside each morning, then it’s less likely that they’ll shed in their hutch the rest of the day. If someone within the household is allergic to guinea pigs, this may be a good habit to get into. Also, it’s probably not a good idea for someone with allergies to handle the guinea pigs in the springtime when they’re shedding more hair than usual.
Sadie, 17 October 2021
my guinea pig has been shedding like crazy. I don't know why because it's the middle of fall. does anybody know why?? thanks!