Unlike cats and dogs, most people consider it unnecessary to regularly worm their guinea pigs. However, guinea pigs can pick up worms from almost any food they eat, so it’s a good idea to wash vegetables to minimise this risk. If your guinea pig has worms, they may lose weight, have diarrhoea, lose their appetite, or be suffering from some bloating. The worms can be treated, but this will need to be done by a vet, who will prescribe a treatment to get rid of the parasites.
Carefully wash plant matter, including fruits and vegetables
Worms are very rare in guinea pigs, so you may have misdiagnosed the problem. If your guinea pig is lacking an appetite and is losing weight, then they may be actually suffering from overgrown teeth. Lacking an appetite is a serious problem, so we recommend seeking advice from a veterinarian as soon as possible.