dogtor UK /ˈdɒɡ.tə/US /ˈdɔɡ.təɹ/ noun2 •(informal, humorous) A veterinarian who treats dogs.I'll bet whoever did this was trying to steal my dog. Now I'll have to take the poor pooch to a dogtor. — 1997 •(informal, humorous) A dog who is also a doctor.What kind of dog works in a hospital? A dogtor. [illustration of a dog, dressed as a doctor, putting a thermometer in a human child's mouth] — 1988 formsdogtors