Feeding your Guinea Pig

Guinea pigs need a balanced diet which is high in fibre. Guinea pigs cannot produce their own vitamin C so their diet must provide this too.

Hay and Grass

Hay and grass should form the majority of your guinea pigs’ diet. Good quality, fresh, dust-free hay must always be available for your guinea pigs to eat. Hay maintains healthy digestion and helps to wear guinea pigs’ teeth down, preventing them from growing too long or misaligned and becoming painful.

Never give your guinea pigs any lawn mower clippings as these can make them very ill.

Specialist Foods

Specialist, vitamin C enriched guinea pig foods should be fed in small, measured amounts daily in addition to hay to ensure your guinea pigs get all the vitamins and minerals they need. We recommend feeding nuggets, as guinea pigs often choose to eat only certain bits of muesli mixes, so they miss out on certain nutrients leading to dietary deficiencies, weight gain and other health problems. We feed our guinea pigs Pets at Home nuggets and recommend that you continue to do so when you take your new animals home. Sudden changes to the diet should be avoided as this can cause digestive upsets. If you do wish to change your guinea pigs’ diet at any time, introduce the new food slowly over period of about 10 days, phasing out the old food completely.


Fresh, leafy greens such as broccoli and kale, or herbs and fresh dandelion leaves should be given to your guinea pigs daily but remember to introduce new foods gradually to avoid digestive upsets. Fruits such as apples, and root vegetables like carrots are high in sugar, so only give them in very small amounts as accasional treats

Never give your guinea pigs any frozen foods as these can make them very ill.


Guinea pigs need fresh water daily in heavy-based bowls or bottles. Check your guinea pigs’ water supply at least twice a day and make sure it does not freeze in winter. A bottle snug is ideal for your guinea pigs’ water bottles – it’ll help to keep the bottles cool and algae free in the summer and help to prevent them from freezing in the winter.