Best Oxalate Level-Rich Foods for Domestic Rabbits

Ranked by oxalate level content among foods safe for domestic rabbits in the Creature Feast catalog.

Spinach per 100g: approximately 970mg oxalic acid — LIMIT STRICTLY Spinach has the highest oxalate content of any common rabbit green at roughly 970mg of oxalic acid per 100g. This makes it the most significant oxalate concern for rabbit owners. Feed only very occasionally and never as the main green in a meal. Many rabbit-savvy vets recommend avoiding spinach entirely for rabbits with any history of urinary calcium issues.

Parsley per 100g: approximately 170mg oxalic acid — rotate, do not feed daily Parsley is moderately high in oxalates at roughly 170mg per 100g. It is also rich in many beneficial nutrients, but the oxalate content means it should be a rotational green offered a few times per week in small amounts, not a daily staple. Pair with low-oxalate greens when you do offer it.

Watercress per 100g: approximately 30-50mg oxalic acid — moderate, OK in rotation Watercress has low-to-moderate oxalate levels at roughly 30-50mg per 100g, making it a much safer choice than spinach or parsley for regular feeding. A good rotational green.

Dandelion greens per 100g: approximately 25-40mg oxalic acid — safe for regular feeding Dandelion greens have moderate oxalate content at roughly 25-40mg per 100g. Despite this, they are generally considered a safe daily green due to their overall nutritional value and the moderate oxalate level.

Romaine Lettuce per 100g: approximately 30mg oxalic acid — SAFE daily staple Romaine lettuce is a low-oxalate baseline green at roughly 30mg per 100g, making it one of the safest daily greens for rabbits. Build your rabbit's daily salad around romaine and similar low-oxalate options.