Sprinkles is the Angela-owned cat in The Office that needed insulin, an ACE inhibitor, and pills to survive.
Sprinkles appears in the fourth-season episode “Money,” where Angela Martin explains that her beloved cat has serious medical needs. She asks Dwight Schrute to care for Sprinkles and gives him detailed instructions, including administering insulin and an ACE inhibitor with the cat’s meal. The unusually demanding treatment plan is part of the episode’s darkly comic portrayal of Angela’s rigid devotion to her pets.
The cat’s name is especially important because Angela owns several cats over the course of the series. Sprinkles is the white cat associated with the medication instructions, while later storylines involve other cats, including Bandit. The pets also become a source of conflict between Angela and Dwight.
A common mix-up is confusing Sprinkles with Bandit, who becomes important in another pet-related storyline. The question specifically describes the cat whose medication routine includes insulin and an ACE inhibitor, making Sprinkles the single canonical answer.