7. Find Additional Features that Your Pet will like Dogs come in many shapes, sizes, and personalities. If you’ve been around a dog long enough, you can tell just what makes him tick and what makes him become ecstatic out of his mind. Check out this dog peep hole that allows your guard dog to finally see what’s on the other side of the fence! You can bet it would be pretty neat to see your pups smiling face when you come home from work!