Updated On September 23rd, 2025
Pet's info: Small Animal | Rabbit | Male | neutered | 14 years and 10 months old | 5 lbs
Recently the color of my elderly male rabbit's urine has become a bright orange, spare am. It's neither sludgy nor smelly. A.M.= typically eats Timothy hay pellets & corn kernels, PM=Timothy Hay, Cilantro, Chard, w/rotation of: red bell ppr, dandelion greens, arugula, spinach, occasional parsley. Small pcs of apple every other a.m. Had cpl small pcs of raw pineapple 3 days in a row nearly 2 wks ago. Cld any of these foods be causing his urine to change color or, worse, cause organ failure?
1 Answer
Published on January 9th, 2018
Hello, and thank you for your question. It's amazing to hear Rusty is almost 15! If all the foods you mentioned are regular items in his diet, it is unlikely that any of them are a cause for the orange urine. Sometimes if urine is left out to oxidize in air (i.e. he peed on the floor instead of in the litter box), it can turn a reddish-orange colour. If Rusty is otherwise acting, eating, and pooping normally, I would keep an eye on him for now. If any of these behaviours change, I would recommend taking him to the vet. They can test his urine sample for any evidence of abnormal crystals or bacteria, and also assess the concentration of his urine to ensure his kidneys are functioning normally. His diet seems just fine. The only thing I would be cautious of is not to feed spinach too often, which it doesn't seem like you are doing since it is in rotation with other veggies. Spinach in large quantities can cause calcium crystals to form in the urine. I hope this helps, and that Rusty is happy and healthy!
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