A human cold is not contagious to a dog, as dogs and humans are not quite immune in the same way. Also, there are viral infections that are not mutually contagious between dogs and humans. So, when a human has a cold, there is no need to worry too much about infecting a dog, and at the same time, when a dog has a cold, there is no need to worry too much about infecting a human.
English Deutsch Français Español Português 日本語 عربي