Large and droopy “puppy-dog eyes” did not just evolve in domesticated ... have similar muscle adaptations that allow them to ...

There have been a few times he just plops his butt on the ground and gives me those sad “puppy dog eyes” and then we are off for another 10 or so minutes… hoping to run into somebody for him to greet.

Dog owners know ... tears when they felt sad or happy. While many animals such as cats, horses and rabbits do have tears, it is mostly to clear debris from their eyes. In fact, if a zookeeper ...