Updated On September 23rd, 2025
Pet's info: Small Animal | Rabbit | Male | neutered | 1 year and 4 months old | 3.4 lbs
my rex rabbit was big when he's couple of months old, I've been raising him for 11 months now, and i notice he's shrunk in size significantly. He's been urinate calcium. I wonder if that's the cause of he's size change.
1 Answer
Published on December 18th, 2018
Thanks for your question about Prince. I would recommend that you start by weighing Prince - I am not sure if you have a weight on him from previously or not, but this would give you an objective measurement of his size. You can purchase a baby scale, or there are scales sold for cats online as well. As far as the calcium in the urine - this is a common/normal finding in rabbits. When they are fed more calcium than their body needs, they will pass the extra in their urine (most mammals, including us, pass extra calcium in the feces). If you are concerned about the amount of calcium coming out in the urine (basically if it is more than just mildly cloudy), you can actively try to decrease the amount of calcium that Prince is ingesting. Common high calcium items that are fed to pet rabbits include alfalfa hay, alfalfa pellets, parsley, dandelion greens, arugula, kale, spinach, collard greens, mustard greens, and turnip greens. Excess calcium shouldn't affect Prince's size, but it may affect his weight if it is causing pain in his urinary bladder. Another recommendation would be to take Prince to see a veterinarian for a wellness examination. They can give you an idea of what his body condition is, and a good weight range for him to stay in depending on that body condition. I hope that helps to answer your question, and thank you for using Petco Pet Education Center, formerly Petcoach!
1Pet Parents found this answer helpful
Book an appointment with the pros – our expert vets are here to help.