Interesting story from my time working at Petsmart:
One day, a woman came in with her German Shepherd and as she was walking through the store one of my co-workers stopped to talk to her. As the conversation progressed the employee (Amy) noticed the dog had something in his mouth.
She asked the owner if the dog had a toy or something, the woman had no idea what she was talking about. So Amy bent down to pet the dog and as she put her hand under the dogs mouth, it opened and dropped this bunny into her hand.
They guessed she picked it up in the parking lot or something, but the dog had just been carrying the bunny in his mouth. The dog wasn’t aggressive about it or anything, all we could figure was that the dog sensed it was a baby and wanted to help it.