Guinea pigs should not be fed Iceberg Lettuce because it is incredibly low in nutritional content. The lettuces that are best for guinea pigs to eat are Red Leaf, Green Leaf, Romaine, Cos and Little Gem.
Is Iceberg Poisonous to Guinea Pigs?
Iceberg lettuce is not poisonous to your pet and won't harm them if eaten but it can give them diarrhoea as it contains a lot of water.
In fact this watery salad vegetable has 96% water content! Vitamin C, a very important nutrient for guinea pigs as their bodies don't make this essential vitamin , is also very low but higher in other lettuce varieties.
What Lettuces are Best?
Guinea pigs tend to prefer the leafy part of a lettuce and often leave the centre stem of the leaf. For this reason, we prefer the red and green leaf varieties as well as the round lettuces which tend to have less of the stem part and have cut down on Romaine / Cos lettuces which have quite a bit of stem (especially if you buy the "hearts")
What Other Leaves Can Guinea Pigs Eat?
Guinea pigs can also eat rocket, spinach, kale, dandelion, watercress, some herbs and other green leaves but just be careful of the calcium content if your guinea pigs are on a low calcium diet. Check out our safe fruit and vegetable list here where you will see the nutritional information including vitamin C and calcium content.
You can also check out a guinea pig's daily dietary requirements here.