Guinea pigs are social creatures and should be kept in same sex groups, pairs or male and female pairs where the male has been castrated. Pairs of males may need to be castrated if aggression develops.

Male guinea pigs are castrated: this means the surgical removal or both testicles under anaesthetic. Where possible, we use skin glue to close the wound so there are no stitches to remove.

It is worth considering having your guinea pig castrated if he lives with a female guinea pig, to prevent breeding, or he fights with the other guinea pigs that he is housed with.

Castration is possible from 4 months of age, and we advise booking a free appointment with a Nurse to discuss the procedure beforehand.

Female guinea pigs can be spayed, but this is generally only done where a specific problem, such as ovarian cysts, is suspected or diagnosed.