Guinea pigs are sensitive to temperature and humidity. The temperature range that's comfortable for them is narrow: about 65–75°F (18–24°C), with low relative humidity (below 50%) preferred. Temperatures above about 85°F (29°C) can cause heatstroke. Avoid drafts and constant direct sunlight. Take care when transporting guinea pigs in very hot or very cold weather.
Is a Guinea Pig Safe Outside Its Cage?
Because they are small, guinea pigs are easily injured outside their cages. They can be stepped on or fall from heights. They like to chew and may gnaw electrical cords or toxic houseplants. Other pets—dogs, cats, ferrets—can seriously harm them. Always supervise a guinea pig outside of its cage, and make sure the area is safe and free of hazards.
What Is a Guinea Pig’s Activity Like?
Unlike many other rodents that are nocturnal (awake at night), guinea pigs are mostly diurnal (awake during the day), so they're active when people are awake and can be handled without disrupting their sleep. Guinea pigs are social animals that often do well in pairs or small groups. To avoid breeding, keep same-sex groups, or have the vet spay/neuter them (surgically remove their reproductive organs) before housing opposite-sex pairs together. Male guinea pigs living together are less likely to fight if neutered or introduced to each other before weaning.
Because guinea pigs are prey animals, contact with other household pets can stress them and increase disease spread, so limit exposure.
