Can Guinea Pigs Eat Grass?

Yes, guinea pigs can consume natural and chemical-free grass as well as fresh leafy green vegetables and herbs. It’s best to introduce their diet gradually so they become familiar with it before trying anything too bold at first.

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Do not feed your pet lawn clippings as these could contain many contaminants that could pose health risks to him/her. Instead, offer fresh cut grass such as wheatgrass which grows easily.



Grass can add extra nutritional value to your pet’s diet and may be especially useful during the hotter summer months when hay becomes less nutritous. However, please keep in mind that fresh grass contains high fiber levels which could cause digestive issues in some animals such as bloat and gas issues.

Ideal feeding practices should consist of feeding your pet a combination of hay and fresh grass on a daily basis to maintain proper digestion and avoid malocclusion (tooth issues). Our high quality western timothy hay provides variety without adding unnecessary calories or energy into their diet.

When giving your pet grass to consume, be sure to monitor them closely to make sure that they don’t consume too much at one time. Ingesting too much at once may cause bloating or diarrhea and difficulty chewing afterwards if they ingest too much at once.


Grass should be fed slowly in small doses to avoid upsetting their digestive tract and leading to Bloat (an untimely condition in which stomach swells up). If your guinea pig displays symptoms like weakness, not eating or drinking normally, difficulty breathing, distended belly or uncontrollable diarrhea seek medical advice immediately from a veterinarian.

Make sure the grass you use is fresh and dry – wet grass provides an ideal breeding ground for bacteria and mold growth, while lawn clippings often contain harmful chemicals like pesticides and fertilizers which could make your guinea pig very sick.

Grow your own grass if you have enough space. Variety is key to the health and welfare of guinea pigs; therefore, be sure to include grass in their diet along with hay and vegetables. However, introduction of any new foods should be gradual over two weeks to prevent stomach upset.


Grass provides less in terms of sugar and calcium than hay, making it an appropriate snack to feed to their guinea pigs throughout their day. Furthermore, grass helps wear down continuously growing teeth–chew toys can only reach front teeth; foraging needs to occur to ensure back molars don’t become too long and trap their tongues.

However, grass should never replace hay as their diet should more closely reflect their natural habitat. Pellets must only be offered in small doses each day and must come from high-quality brands (typically Oxbow).

Growing grass from scratch is both simple and exciting! All it requires is using an appropriate growing medium suited for guineas and misting it regularly to prevent drying out. Plus, use your guinea’s droppings as fertilizer!


Guinea pigs can enjoy the fresh scent and flavors of grass in the summer months, though only as part of their diet (grass does not provide as many essential vitamins). In fact, during the winter months no grass should be fed whatsoever!

Grass can help regulate guinea pig blood sugar levels and prevent an excess build up that could result in diarrhoea. Furthermore, its abundance of fibre helps decrease their risk of abdominal stones forming.

Make sure that your guinea pigs have access to clean water at all times and provide them with unlimited grass hay once they reach six months old. Pellets should only be offered sparingly as too many can encourage picky eating; avoid pellet mixes that contain nuts, seeds and dried fruits as these contain too much sugar which could harm their health. Also ensure the grass you offer them is free from pesticides or chemical fertilizers before providing food.