Pets is a pet shop in Springfield. The day Apu lost his job at the Kwik-E-Mart, the store was having a special where it was selling laughing monkeys. This was inconvenient to Apu's mood as it made him feel laughed at.
Leter, the shop showcased Kissing Fish.
It also housed a bird with purple plumage. Largely because of this and Bart overhearing the Space Mutants' plan of creating a superweapon using purple objects, Bart used a cherry bomb to scare it away, although he was later forced to jump onto the windowsill due to the explosion drawing a vicious dog to his direction.