If you need help telling dog from coyote tracks, here are some examples. I wish I had a better sample of dog tracks, because sighthounds tend to have very coyote-like feet. However, coyote tracks always look like this. They maybe bigger or smaller, depending upon whether you have an admixed Eastern coyote or a pure Western coyote.
Domestic dog (from Miley). She’s quite a bit larger than a coyote.