Basic Diet for Guinea Pigs

 Guinea Pigs need certain Vitamins, Nutrients and Minerals which can differ a lot from other rodents such as Rabbits or Hamsters. 

Hay or Fresh/Dried Grass
These should be 80% of their daily intake. In the wild they mostly eat grasses as their native environment is usually situated within Temperate Grasslands, Woodlands or in extreme conditions, Low-Mountainous Environments. However, if you want to introduce fresh grass to them, you should do introduce it slowly, with a small amount and increasing the amount slowly, which would therefore not upset their stomachs. Make sure not to give Guinea Pigs sopping wet grass, which could give them too much water. This can be similar to humans drinking too much water (water intoxication). Also make sure not to feed your piggies any grass which has had animal faeces or urine, which could therefore be poisonous (or any pesticides for that matter), another problem could be if you feed any grass which has been put through, or cut via a lawn mower as it has been through something that may be oily or have other such elements/compounds which may be poisonous to Guinea Pigs, in addition to this; who would want to eat something that was cut by a machine or strimmer.

Guinea Pigs need good quality hay, and most turn to timothy hay, as it is rich on nutrition and fibres. Hay can also wear down Guinea Pig's teeth which is a great thing as their teeth never stop growing. They need a constant supply and constant access. Hay racks a great, however they can obstruct the access to the hay, thus resulting in your piggies eating less hay in comparison to keeping a small or large pile of hay.

Vegetables
An estimated need for veggies is 15% of their entire diet. Make sure that you feed them a good mix of different veggies. You can include Carrots, Bell peppers, celery, beetroot, kale, cucumber and a whole lot more. I personally give my piggies 2 Bowls of veggies a day, which is 1 bowl per piggie.

Pellets
This should be 5% of their food, which should be only a supplementary food. These pellets shouldn't be based on grains or seeds. The best pellets are cylindrical shaped, and should offer a good rand of vitamins and other such nutrients.

Some piggies don't eat a lot of these pellets which is perfectly fine, just make sure they're still eating and drinking other foods which is in their diet. If they're not eating at all, they may be experiencing Anorexia (Read about it here)

Water
This specific liquid is very important to every animal alive, as it is the building blocks of life. Make sure your Guinea Pigs have a constant supply of water, either from a bottle and sipping tube. However it also needs to be fresh and clean. Make sure to clean their bottle often as well.