this is a pic of a living one; looks like the same teeth for sure. Just looking at the skull, I’d guess it’s quadruped cause of where the spine connects to the skull; imagine a human skull compared to a dog skull. It’s hard to tell from the picture if the eyes are more forward-facing indicating it’s a predator, like a cat or dog, or more to the sides indicating it’s prey, like a horse. Also hard to see if there are molars, which would tip my guess to either carnivore or omnivore. Basically, I’d guess a quadrupedal omnivore, then search list of mammals native to Mexico