Lice are extremely annoying and durable little creatures and can be hiding almost anywhere. The majority of the time you will find your guinea pig lice has come from another guinea pig. Lice spreads incredibly easily from one to another, and before long your entire herd can become infested.

Not every fungal infection will present in the same way, but the most common traits of fungal infections in guinea pigs are skin lesions and hair loss. These symptoms usually present on the head area first before progressing to the rest of the body. There would typically be crusting and scabbing around these areas too.