If breeding is to take place in a school there must be sufficient care, facilities, housing and space available for the extra animals. There must be a need for extra animals, or an appropriate plan for the disposal of surplus animals in place, prior to beginning this activity. If killing is the only disposal option, then the breeding program is not allowed.

Female guinea pigs exhibit post-partum oestrus and can mate and become pregnant within 12-24 hours after giving birth. To ensure this doesn’t happen, the male must be removed from the cage prior to the female giving birth. Offspring should be separated into single sex groups at weaning (3-4 weeks of age).