Rabbit health: Urolithiasis in rabbits. Rabbits have a very unusual calcium metabolism. In cats and dogs, the intestinal calcium intake is adjusted and adjusted according to the needs of the body. Excess calcium in the diet flows through the intestine and is secreted through the stool. In rabbits, however, the calcium uptake appears to be less well-regulated and proportional to the amount of calcium in the diet, regardless of the body's need. Excessive calcium is therefore excreted through the urinary tract, which often causes urine with a high level of Causes of calcium blisters. Blistering in the bladder can cause discomfort and disease in animals susceptible to it.