Distemper
This disease is known to be one of the most fatal diseases seen in dogs. The American Veterinary Medical Association says that the distemper virus is the most threatening doggie diseases.
Parvovirus (Parvo)
Parvo can effect dogs anywhere in the world. Sadly, it is extremely contagious, especially among puppies, and is known to overwhelm a dog leading to death within 48 to 72 hours after exposure.
Rabies
Because rabies can be fatal to humans and other mammals, state and local laws uniformly require dogs to get the rabies vaccination, and mandate yearly booster shots.
Lyme Disease
Symptoms of Lyme Disease in dogs often include lethargy, joint pain, lack of appetite, lymph node enlargement, and a fever. Lyme disease is a bacterial infection that is spread through ticks.
Heartworm
Heartworms are parasites. They grow and multiply by infesting the chambers of a dog’s heart, arteries, and lungs.