I used to have two dogs. When the older one died, whenever the younger one was outside, she would intently look around the street and area for him, hoping he'd come back from around a corner or something. He never did.
Dogs, Cats, and many other pets do this as well. Many people forget how intelligent they are and that they can sense things that we might miss or don't think they can feel.
There is nothing fun about this in fact it's heartbreaking. It's just amazing how intelligent and feeling animals are this is not fun moments at all I hope a lot of people learn from this just what wonderful creatures live among us.
Rest In Peave Timber's friend