Rick and Morty: Season 1, Episode 2

1 - 2: Lawnmower Dog

Morty's small, white dog Snuffles gets on the nerves of the family, so Rick quickly builds a knowledge enhancing helmet for the dog. In the meantime, Rick and Morty decide to incept the dreams of Morty's math teacher, Mr. Goldenfold in order to convince him to give Morty A's in math. While the duo are sent on an epic dream world journey, Snuffles slowly gains sentience, which leads to a slew of even more problems.