In addition to digestive discomfort, excessive consumption of oranges can lead to central nervous system problems in canines and has been shown to increase the likelihood of bladder stones. (smartdogowners.com)
Signs of nervous system problems may also be seen, particularly in kittens. (cat-health-guide.org)
Some dogs have been known to develop nervous system problems after the administration of a modified live distemper vaccine. (cuteness.com)