My male beagle seems to have discovered what we're doing when my husband and I get the "feeding tub" out. We used to have rats as pets and he wasn't really interested. We're feeding ft so its not like they're live and moving. He leans up on the table we have the feeding tub on and whines and looks from the tub to us and back. We usually have to send him out of the room.
He also gets very upset when he hears puppies cry on tv. He looks at me like, "Mom! Help the puppies!"