Sometimes — with care
Spinach is fine for rabbits about once a week — its high oxalate content means it shouldn’t be a daily green, especially for rabbits with urinary issues.
Spinach offers iron, vitamins A and K and fibre, and rabbits enjoy it. The catch is oxalic acid: spinach is one of the highest-oxalate greens, and a daily spinach habit can contribute to urinary sludge and bladder stones in rabbits, plus it binds calcium. The standard rabbit-care rule: rotate greens so high-oxalate ones (spinach, parsley, beet greens, swiss chard) appear only once or twice a week each, alongside low-oxalate staples like romaine and coriander.
A few leaves once a week within the daily greens plate (1 cup of mixed greens per kg body weight). Skip spinach entirely for rabbits with a history of bladder sludge or stones. Always wash thoroughly.
Rotate with romaine, lamb’s lettuce, coriander, basil and carrot tops — variety is the actual goal.
This article is general information, not veterinary advice. If your pet has eaten something potentially harmful or shows symptoms, contact your vet or an emergency clinic immediately. Full disclaimer.