Feeding Your Guinea Pig
Everything about food and drink!

Guinea pigs are often mistaken as herbivores - animals that eat only vegetables, fruit, plants, grain and vegetable by-products. They are in fact omnivores as in the wild they also eat small bugs and grubs and need such protein in their diet in order to stay healthy.Vitamin C

Like humans and apes, guinea pigs are unable to synthesise Vitamin C (ascorbic acid) naturally in their bodies. It is therefore essential to ensure that this vital ingredient is is always present in their diet, by ensuring that they have fresh green vegetables and fruit every day.

A deficiency in Vitamin C in both humans and guinea pigs causes a condition known as scurvy, resulting in dry, crusty skin and hair loss. Since the symptoms of scurvy can easily be confused with mite infestations you should seek the advice of your vet if your guinea pig shows any of these symptoms.To ensure that our cavies are receiving enough, especially during winter months when fresh vegetables are less freely accessible I usually add a small piece of a soluble vitamin C tablet to their water bottles. There is no need to worry about an overdose of this vitamin as the body will not absorb more than it needs.
Click here for more on Vitamin Supplements >>

Fruit and Veg
The following fruit and vegetables are much loved by guinea pigs and contain a goodly amount of Vitamin C...

  • Cauliflower leaves (not the hearts)
  • Carrots (Every guinea pigs' fave!)
  • Apples and pears
  • Brussels sprouts (just the outer leaves and stalks)
  • Swedes, turnips and parsnips
  • Grapes (seedless)
  • Capsicum (minus the seeds)
  • Cabbage
  • Melon
  • Broccoli
  • Bananas (including the skins)
  • Sweetcorn (throw in the leaves and silks too!)
  • Pea pods

Also try cucumber, lettuce (in moderation as it contains laudanum), and celery. These are however relatively low in vitamin C content and should therefore not be given as part of the staple diet.

Peaches and plums and oranges contain too much acid and could cause problems. It is best to give fruit as an occasional treat and not too over-generously as too much has been known to cause scabbing.

If you store vegetables in your fridge, allow them to "warm up" a little before giving them to your animals by leaving them aside for 15 minutes or so before feeding.
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Wild plants
There are many wild plants that are rich in vitamins and safe for your piggies. The following are among the most recognisable.. when picking wild plants for food always remember that if you're not sure what it is, it's best left where it is!
  • Dandelion leaves can be a great tonic and guinea pigs love them (in fact a small amount added to a salad is quite nice for humans too). Give in moderation though as they work as a laxative!
  • Grass - guinea pig's number one favourite food... but do not give them the emptyings of your lawnmower as it may have picked up other things!
  • Parsley is excellent for pregnant, convalescing or sick guinea pigs.
  • Clover

Another point to remember when picking plants is to ensure that they are from clean patches of your garden which have not been contaminated by dog pee!As a general rule for giving vegetables to guinea pigs, whether bought or found food should be clean and fresh (no yellow leaves or mould) and free from contamination by insecticides, fungal crop sprays, weedkillers, traffic exhaust fumes or animal droppings. After all, would you eat anything that doesn't meet this criteria?
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BEWARE - Dangerous Plants!
There are of course a great many wild plants which are poisonous and should of course never be fed to guinea pigs (or humans!) In her book " The Really Useful Guinea Pig Guide " Myra Mahoney lists the following...

Wild plants:

  • anemone
  • arum
  • autumn crocus
  • belladonna (deadly nightshade)
  • bindweed
  • black nightshade
  • bluebell
  • bryony
  • buttercup
  • celandine
  • corn cockle
  • daisy
  • docks
  • dog mercury
  • elder
  • figwort
  • flags and irises
  • fool's parsley
  • foxglove
  • hemlock
  • henbane
  • oak
  • poppy
  • ragwort
  • scarlet pimpernel
  • spurge
  • toad flax
  • traveller's joy (old man's beard)


Common Garden Plants:

  • acacia
  • aconite
  • All plants grown from bulb (e.g.. tulip, daffodil,crocus and hyacinth)
  • beech
  • box
  • Christmas rose
  • columbine
  • gypsophila
  • ivy
  • laburnum
  • larkspur or delphinium
  • lily of the valley
  • love in a mist
  • privet
  • rhubarb leaves
  • snowdrop
  • yew
Be careful when setting up a garden run for your guinea pigs that none of these plants are growing where the piggies can get at them!

Dry cereal mixesThere are a number of different brands of mix especially prepared for guinea pigs and available from various pet supply stores. Some of these contain a vitamin C supplement, although this should not be considered as a substitute for fresh fruit and veg as vitamin C has a fairly short shelf life.When buying dry mixes, make sure that is for guinea pigs and not for hamsters or rabbits. Hamster mixes contain nuts and sunflower seeds which are not suitable for cavies. Rabbit mixes contain a medication which is necessary to prevent the disease coccidiosis in bunnies, but is poisonous to guinea pigs. So if you keep more than one type of rodent, always ensure that their foods are not shared!Which brand of dry mix to buy is very much a matter of taste... we have tried some brands recommended by cavy-keeping friends which our own pigs have simply turned their noses up at!
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Hay and Dried GrassHay is very important to guinea pigs and they consume large quantities of it daily. A great source of roughage to aid digestion it also gives them something to nibble at... and some warmth when it's cold! Good quality hay is available from pet shops and farms. The hay should be of good quality, soft and sweet and checked for mould and thistles.It is a good idea to add alfalfa (available in either fibre mix, cube or pellet form) to the dry mix, or a little pasture or fibre mix for horses. I always add a handful of Spillers Readigrass to the mix each evening... the piggies love it!
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Bran MashWe've tried this on our own pigs with poor results... they simply turned their noses up at it! However this may have been a simple comment on our cooking skills as many people have told us that it's a great treat and diet supplement much loved by their pigs. For that reason we happily share it with you here...Bran mixed with a little warm water is especially valued during the winter months. Mix just enough to be eaten in one day and remove the container once your pet has emptied it, washing it out thoroughly before using it again next day.
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