Can Guinea Pigs Eat Scallions? A Complete Guide to Their Safety


Guinea pigs are adorable small pets that require a balanced diet to stay healthy. While they mainly thrive on hay, vegetables also play a crucial role in their nutritional needs. However, not all vegetables are safe for guinea pigs to consume. In this article, we will explore whether guinea pigs can eat scallions, also known as green onions, and discuss their safety.

What are Scallions?

Scallions are a type of young onions that are commonly used in cooking due to their mild and delicate flavor. They have a long green stalk with a small white bulb at the end. Scallions are popular in various cuisines and are often added to salads, soups, stir-fries, and other dishes for their taste and visual appeal.

Can Guinea Pigs Eat Scallions?

No, guinea pigs cannot eat scallions. Scallions belong to the allium family, along with onions, garlic, and chives. Allium vegetables contain a compound called thiosulphate, which is toxic to guinea pigs. Ingesting scallions can lead to digestive upset, bloating, and even more severe health issues like anemia. Therefore, it is best to avoid feeding scallions to your furry friends to ensure their well-being.

Health Risks of Feeding Scallions to Guinea Pigs

As mentioned earlier, the thiosulphate present in scallions can be harmful to guinea pigs. This compound can cause damage to their red blood cells, leading to anemia. Additionally, scallions contain high levels of oxalates, which can contribute to the formation of bladder and kidney stones in guinea pigs, causing discomfort and potential blockages.

Alternatives to Scallions

Although guinea pigs cannot eat scallions, there are plenty of other vegetables that are safe and healthy for them. Some suitable options include:

  • Leafy greens like spinach, romaine lettuce, and kale
  • Bell peppers
  • Cucumbers
  • Carrots
  • Zucchini
  • Parsley

When introducing any new vegetables into your guinea pig’s diet, it is essential to do so gradually and in small amounts. This allows their digestive system to adjust and minimizes the risk of gastrointestinal issues.


In conclusion, guinea pigs should not be fed scallions or any other allium vegetables due to the potential risks they pose. It is crucial to ensure that your furry friends receive a balanced diet rich in hay, supplemented with appropriate vegetables and occasional fruit treats. Always prioritize their safety and well-being when selecting food items for your guinea pigs.

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