Here's why:
* They groom themselves: Guinea pigs are very clean animals and keep themselves tidy by grooming regularly.
* Washing can be stressful: Baths can be scary and uncomfortable for them, and can lead to health problems if done too often.
* Their natural oils are important: Guinea pigs have natural oils in their fur that help protect their skin.
When is it okay to bathe a guinea pig?
* If they're very dirty: This might happen if they've gotten into something messy, but it's best to try spot-cleaning with a damp cloth first.
* If they have skin problems: A vet can advise if bathing is necessary for a skin condition.
Important note: Always use a pet-safe shampoo and conditioner, and avoid getting water in their ears or eyes.
If you're unsure, it's always best to ask your vet!