If you introduce new foods too quickly, or feed inappropriate food choices, the rabbit's normal digestive flora (normal bacteria) will be disturbed and may lead to a sick rabbit. (cedarbayouanimalclinic.com)
I will be writing about my dog dying because of inappropriate food and treats I believe caused her harm. (fidoseofreality.com)
Unknown to you well meaning neighbors may feed your cat inappropriate food. (best-cat-art.com)