Google and YouTube are your friend .... look at many pics of coyotes and watch footage of them walking/running etc.
That being said, I don’t hear that many stories about coyote dog mixes ... I think it’s more common back east maybe?
Never take a shot that you’re unsure of. Some hikers/hunters let their dogs run free, so be careful, of course.
A wolf might look More like a dog and I’ve known people to have half wolf half dog pets.
But .... really coyotes are fairly distinctive looking. Somehow, I always know when it’s really a coyote, but maybe not the other way around .... if I have to think about it, it’s never a coyote.
Be sure of your target and beyond.
Size could be another indicator .... the coyotes I see are usually pretty small, but I bet that changes with the area.