Don't get too worried about the wildlife, you are more likely to get injured driving to the trailhead than on the hike! Unless the animal is rabid or you are threatening its babies, it likely wants nothing to do with you.
If it's a psychological thing, consider bringing pepper or bear spray.
Hike Arizona it is full of sharp, pointy, ankle-twisting, HAZmaster crushing ROCKS!! Hike Arizona it is full of sharp, pointy, shin-stabbing, skin-shredding plants! Hike Arizona it is full of striking, biting, stabbing, venomous wildlife!