In North Florida, at least, the mix is from red wolf,through coyotes through domestic dogs. It is obvious if one sees more than a couple of them in the almost-wild as around the power plant where I am a security guard, mostly at night when the canines venture onto the grounds to harass the deer that are all over the place. I have seen one that looked like classic coyote of maybe 45 pounds but with a mottled coat and ears that did not stand erect in the company of one that would be termed a wolf if a hunter saw it.
I’m in S.E. TN near the Great Smoky Mountains, Cherokee National Forest, and other large game areas. Mostly the coyotes don’t bother much as long as they can find small game but they are scary big and brave. They are also more aggressive than pure coyote. Sometimes when they hunt they even howl like a wolf instead of yipping like a coyote. It’s kind of a mix.
My neighbor has a critter cam on her porch and they come up on that. At first she thought they were reddish colored German Shepherd’s and then realized they were Coy/Wolves. That’s what I call them.
I have three large dogs in a fenced yard outside and the coyotes come close but don’t bother them. All of my dogs are spayed and neutered so there isn’t much for them here. :-) I never leave my small house dogs outside after dark though, even inside the fence.