How To Check Your Guinea Pigs' Hair

Start off by holding your guinea pig on your lap. The principle things you’re examining are the consistency and the cleanliness of your guinea pig’s coat. Once you’ve got a good idea of the general condition of your guinea pig’s hair, then you can give them an examination for some particular problems that guinea pigs can suffer from.

It’s important to be aware of what parasites guinea pig’s coats may have living in them, so that you know what you should be looking for. The main parasites that affect guinea pigs are mange, static lice and running lice. Mange is caused by mites and fungus. Static lice and running lice are lice and mites respectively. All can cause discomfort and stress to your pets, so it’s important to part the coat and have a good look for these things when you give them a health check.

even young guinea pigs have lots of hair
Guinea pigs can suffer from a lot of different parasites

If your guinea pig has bald spots, then this could be due to mange mites or a fungal infection, both of which are easily treatable with a special shampoo. Many owners assume that guinea pigs lose their hair as they get older, but this isn’t true. Any loss of hair in guinea pigs that isn’t behind the ears should be investigated. An exception is that sometimes guinea pigs may have a bald patch on their behind, caused by the substance they use to mark their territory. This is normal, especially in boars, but if it looks a bit sore then there might be another underlying problem.

Guinea pig’s hair loss can also be caused by … guinea pigs. Guinea pigs can sometimes chew off each other’s or their own hair, in a behaviour known as barbering. Barbering can be caused by boredom, stress, and lack of roughage like hay. Keep supplying hay, and try and provide some objects of interest for your guinea pigs and see if this helps.

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Elizabeth, 7 November 2019

Hi . I just noticed a small bald patch on my guinea pigs ear . I inspected the spot and see just a small scab but it looks like it could be from him scratching. He does not do it often . There is no redness or anything out of the ordinary inside ear or about bald spot . I have another pig as well . Could he have caused this by scratching or should I be concerned

, 8 October 2019

I have two guinea pigs, one of them has a bald patch on its behind. There doesn’t seem to be any dried blood just a clean pink bald patch. I don’t think there is dandruff, but I’m not sure because it has white fur. The other one doesn’t have any problems. I’ve had them for about 2 years now and this is the first time I encountered this situation. Anyone have any suggestions on what this is? I’ll be bringing them to the vet to get checked up, but I just want some ideas on what it may be. Thanks

Jayna, 10 August 2019

One of my pregnant female guinea pigs has a bald patch under her neck. No blood just skin. Should I buy a different shampoo or something?

Seaerra, 21 July 2019

@Dwaa - When I first got my guinea pig a few years ago I had the same thing happen. I looked at him and saw a an entire missing patch of hair but with dried blood over it too and realized by it’s positioning that he just had scratched himself when he got a little frightened and tried to squeeze between the ramp and the wall in his cage. Wouldn’t worry too much just take care of the wound and you’re probably fine!

Dwaa, 4 July 2019

My guinea pig only has one bald spot. His cagemates don't have any either. It has dried blood on it. I am assuming it is an injury. Any ideas?

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