Best coyote dog, I ever seen & heard about. Was a male greyhound owned by an old coyote houndsman. He farmed in the country by Creston, Iowa. This dog grew to a massive size, 39" @ the shoulder(was the size of a huge Great-Dane). This dog would consistantly kill coyotes by his self in a short manner. Clyde would use other dogs(greyhounds) to catch the yote(This dog lagged behind the chase...slower).
Once he caught up to the fight, he'd wade in, push the other dogs out. So he could have the yote to himself(he hated them, with a passion). He'd kill them quickly, and carry them back to Clyde's truck. Clyde also told me he could jump fences with a dead yote in his mouth. What a dog. He killed many, many coyotes.
Only once did he not accomplish his task. He did battle with a very large Black coydog, for about 1/2hr. They ended up shooting the coydog. Clyde said "it" weighed 75lbs. Looked mostly coyote.
Boy! I'd loved to seen that battle.