Any of various undomesticated mammals of the family Canidae that are thought to resemble domestic dogs as distinguished from jackals or wolves(noun)
WordNet. Princeton University. 2010.
Use "wild dog" in a sentence
"Here in the shrouded darkness there were other sounds: the sharp cries of the owls, the snarl of a polecat, the whining of a wild dog somewhere in the underbrush who resented being disturbed."