Common Dog Diseases and Health Problems Whether your dog is a working companion, champion show animal, hunting partner, or just a best friend, the kindest and most responsible thing you can do for him is to provide proper health care. Knowing about common dog diseases and being aware of appropriate prevention and treatment can better help you provide that care. Many Diseases Can Be Prevented Some of the most common and serious dog diseases have been made less common through vaccines: however, these diseases continue to threaten a dog that lacks proper immunization. Puppies many be vaccinated as early as 4-6 weeks depending on each situation and the veterinarian’s advice. Through mother’s milk, puppies receive diseasefighting antibodies, which last 6-16 weeks. Vaccinations then take over. Yearly boosters should be given throughout your dog’s life, including old age when your dog may become more susceptible to some diseases. The following diseases can be prevented through...