Since rabies is a fatal virus that can be spread to humans and other animals through animal bites, rabies vaccination is normally mandated by law in most jurisdictions.
Given that canine distemper is a highly contagious and sometimes fatal viral disease that can impair a dog's respiratory, gastrointestinal, and nervous systems, it is strongly advised that all canines receive the vaccine.
Another crucial immunisation for dogs is the parvovirus vaccine because the virus, which is extremely contagious and can cause severe gastrointestinal sickness, is particularly dangerous for pups.
A leptospirosis vaccine is also advised because leptospirosis, a bacterial disease that can harm the liver and kidneys in humans and dogs, can be spread by polluted water or soil.