If humans have doctors, so does our beloved pet. Veterinarians should be consulted when our pet becomes sick.
Veterinarians have studied for the purpose of healing our sick animal friends. Aside from this, they are the foremost authority in questions such as pet care, pet feeding, pet housing, grooming, among others.
VETERINARY MEDICINE
Well, according to wikipedia, it is the branch of science that deals with treatment (medical, dental and surgical) to non-humans and non-plants. Principally, all animals, be it wild or domesticated, are the foremost patients of a person practicing veterinary medicine.
WHEN TO GO TO A VETERINARIAN
Make sure that your veterinarian has complete tools and medicines and have knowledge on animal care. Also, it is better if you could ask some tips and advices to better care for your pets. Your veterinarian is your pet's as well as your own friend.