Did you know that dogs can smell the shape of a person's face?
That's right: your dog can tell the difference between your mom and dad, or your best friend, by smelling their face. Dogs also have smell receptors that are 300-1000 times more sensitive than ours.
So if you've ever wondered why your pup seems to know when you're coming home from work—even if it's been hours since you left—now you know!