Guinea Pig Care — A Complete Guide for New Owners
A guinea pig is a social, sensitive pet with a unique need for daily vitamin C and one hard rule: never house it with a rabbit. This guide summarizes the basics of guinea pig care and what matters for keeping one in Israel.
A Spacious, Heat-Sensitive Cage
Guinea pigs need a spacious cage with a solid floor (not wire), as large as possible for the number of animals housed in it. They are especially heat-sensitive and need a ventilated, cool spot, away from direct sunlight.
Diet: Hay, Vegetables — and Daily Vitamin C
About 80–90% of the diet should be good-quality hay, available without limit, alongside fresh vegetables daily. Critical: unlike most mammals, guinea pigs cannot produce vitamin C themselves and depend entirely on a daily external supply (vitamin-C-rich vegetables or a dedicated supplement) — a deficiency can cause scurvy, a life-threatening illness. Note that the vitamin C in commercial pellets degrades over time once the bag is opened (exposure to air and light), so even with a fortified pellet, fresh vegetables should remain the reliable ongoing source.
Strong Social Needs — Never Alone
Guinea pigs are highly social animals and must never be kept alone — they need a companion of the same sex (or a group) for their mental and physical wellbeing.
Critical: Never with Rabbits
Guinea pigs must never be housed together with rabbits, even with good intentions ("company for the rabbit"). Rabbits and guinea pigs have different dietary needs, rabbits can injure guinea pigs, and guinea pigs can catch diseases that rabbits carry but are immune to.
Safe Handling, Low to a Surface
Handle guinea pigs gently and low to a surface or the floor to prevent injury from a fall — they are relatively nervous animals and can be startled by sudden movement.
An Exotic Vet and Lifespan
Find a vet experienced with exotic pets/rodents in advance, rather than waiting for a problem to arise. A guinea pig typically lives 4 to 8 years — a fairly long commitment relative to its small size.
Israel: The Law and Common Mistakes
There is no guinea-pig-specific law in Israel; the 1994 Animal Welfare Law applies to them like any kept animal, and the 2009 regulations (requiring a minimum cage floor area of about 600cm²) mainly govern commercial operations like pet shops. Guinea pigs are sensitive to extreme heat; keep them in a ventilated, cool spot, especially during the Israeli summer, and never leave one in a parked car. Common mistakes: keeping a single guinea pig "for company" for a rabbit, feeding muesli instead of hay, and irregular vitamin C supply.
FAQ
Can a guinea pig live with a rabbit?
No — guinea pigs and rabbits must never be housed together; they have different dietary needs, and rabbits can injure guinea pigs.
Why is vitamin C so important for guinea pigs?
Guinea pigs cannot produce vitamin C themselves and depend on a daily dietary supply; a deficiency can cause scurvy, a life-threatening illness.
Can you keep a single guinea pig alone?
It's not recommended — guinea pigs are highly social and need a same-sex companion for their mental and physical wellbeing.