Until they build up their immunity, puppies are susceptible to diseases carried by wildlife. Canine Distemper Virus (CDV) is carried by a number of wildlife carnivorous species such as raccoons, skunks, foxes, otters, weasels, coyotes, wolves, and even mink. It is spread through the secretions and excretions of infected animals usually in airborne particles that other animals, including dogs, can breathe in. Rabies is similarly passed through secretions but usually as the result of a bite from a rabid host. Click on the link below for ways to keep your puppy safe.