Can Guinea Pigs Eat Green Onions? (Risks & Benefits)

Can Guinea Pigs Eat Green Onions? (Risks & Benefits)

Guinea pigs can eat green onion, but not all of it. Green onion has some nutrients that benefit guinea pigs in small quantities. Green onion is healthy for guinea pigs in moderation and under a few conditions. It is crucial to have sufficient information regarding the guinea pig’s diet before feeding green onions to a guinea pig. 

Do guinea pigs like green onions?

Guinea pigs like to eat the leaves of green onions, but the bulb is too overpowering and toxic for them. The leaves of green onion are crunchy, fresh, and have a unique taste. However, some guinea pigs do not like the leaves either. 

Are green onions safe to be eaten by guinea pigs?

Yes, green onions are safe for guinea pigs as long as you feed them only the clean leaves in moderation. Too many green onion leaves can cause gastric issues and an overflow of calcium in their system. As long as you wash the chemicals off the leaves, they are safe for guinea pigs.

When can guinea pigs eat green onions?

Guinea pigs can safely consume green onion leaves if the rest of their diet is perfectly balanced. They can eat green onions at any age, provided you alter their amount according to their size. As long as you feed them in moderation, guinea pigs can eat green onions.

When should you not feed green onions to guinea pigs?

If the guinea pigs do not respond well to a small number of green onion leaves, refrain from feeding those in the future. If you only have the green onion bulb, do not feed it to the guinea pig. 

What are the benefits of feeding green onions to guinea pigs?

These are the following benefits of green onion for guinea pigs:

  • The carbohydrates and proteins in green onions are rich sources of energy. 
  • The fiber content helps with effective digestion and prevents irregular bowel movements.
  • Green onions have negligible fat content essential for brain functioning and energy maintenance. 
  • Green onions contain zero cholesterol, thus maintaining cardiovascular health.
  • Vitamin C content prevents scurvy.
  • Vitamin E content prevents cancer and promotes healthy eyesight and skin. 
  • Iron content helps promote healthy blood.
  • Vitamin B6 promotes serotonin production. 

How many green onions can guinea pigs eat?

Guinea pigs can eat only a handful of green onion leaves about once or twice a week. It is best to test whether your guinea pig likes the green onion leaf by giving only a tiny bit at first. If they do not react adversely to the green onion leaf, gradually increase the frequency over a few weeks. 

What are the risks of overfeeding green onions to guinea pigs?

These are the following risks of overfeeding green onions to guinea pigs:

  1. Bladder/kidney stones: Green onions contain calcium, which is harmful to guinea pigs in excess amounts. It can result in kidney stones, causing bloody urine and renal failure.
  2. Diarrhea: Green onions are a rich source of fiber, but too much fiber can cause diarrhea and flatulence. 
  3. Other sicknesses/ discomfort:  Green onions are inherently acidic, due to which too much of them can cause your guinea pig to feel uncomfortable.

Frequently Asked Questions

Can Guinea Pigs Eat Other Varieties Of Onion?

Apart from the green onion leaves, guinea pigs cannot consume any onion, irrespective of the variety. They all have the same toxic compounds that are fatal for guinea pigs. 

Can Guinea Pigs Eat The Leaves Of Green Onion?

Guinea pigs can safely consume the leaves of green onions in small to moderate amounts, and these leaves are beneficial for them. The leaves have all the vitamins, proteins, and fats required to keep a guinea pig healthy. The leaves of green onion are the only safe portion for guinea pigs. 

Can Guinea Pigs Eat The Bulb Of Green Onions?

No. Never feed a guinea pig the bulb of the green onion because it is toxic for them. It is also too aromatic for the palette of a guinea pig. Feeding a guinea pig the bulb of green onion can cause poisoning and death. The bulb of a green onion contains thiosulphate and disulfide compounds, both of which are harmful to guinea pigs.

Can Guinea Pigs Eat Cooked Green Onions?

No, guinea pigs can not digest cooked green onion leaves/bulbs or any other cooked foods. Cooking green onions reduces their nutritional value, which is not healthy for guinea pigs. Besides, guinea pigs do not eat cooked vegetables in the wild. 


Guinea pigs love to eat green onions as long as you only feed them the leaves. Most guinea pigs find the aroma and taste of green onion bulbs repulsive. They can eat green onion leaves only in moderation. Green onion leaves have several health benefits for guinea pigs, but excess of them can cause sickness. 

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