Snuffles was a dog adopted by the Smith family and in the episode he is first seeing annoying Jerry by staring at him blankly and urinating on the carpet. In a fit of anger Jerry shoves Snuffles' face into his own urine and Morty quickly comes to Snuffles' defense. Jerry then asks Rick if he could create a device to make the dog smarter which he reluctantly does by giving Snuffles a helmet which made him more intelligent. Snuffles begins to realize how humans are really treating his kind and becomes vengeful.