1. Ringworm (Dermatophytosis): This is a fungal infection, not a worm, that causes circular, scaly patches of hair loss. It's highly contagious to other guinea pigs and even humans.
2. Mites (Sarcoptic mange): These tiny creatures burrow into the skin, causing intense itching and hair loss. It's highly contagious and can be difficult to treat.
3. Gastrointestinal Parasites: Several different types of worms can infect guinea pigs, including roundworms, tapeworms, and pinworms. These can lead to weight loss, diarrhea, and other digestive problems.
It's important to remember that this is not an exhaustive list, and guinea pigs can be susceptible to other parasites as well. Regular vet checkups and proper hygiene practices are essential for preventing and managing parasitic infections in guinea pigs.