A man with a broken leg says he spent $400 in vet bills only to conclude his dog was limping out of "sympathy." Russell Jonestook took his limping pup to the vet and an x-ray found nothing wrong. Many have taken Russell's viral video as a demonstration of "pure love" that shows just how in tune animals are with humans. There have been studies that found dogs -- which have been trained -- imitate their owners even without the prospect of a reward.