I do believe animals can feel on another level than we think they can.
We had a wild bird hit the window, it was so sad. Hubby and I buried him and we could hear the birds in the forest doing a long warning call, sort of goodbye it seems.
My first dog was from a neighbor that passed away, she was in mourning for her master. She was such a sweet old dog, 20 years when we got her .
Now that I think about it, it was funny because she had Doggy Dementia. (who knew I'd end up a caregiver LOL) She was wacky but always a loving dog.