The Hughleys (1998)

Darryl and Mr. Park's feud gets so bad that Yvonne and neighbors insist they call a truce. Mr. Park refuses to sign the treaty because Darryl is up one prank on him. He says he'll sign the treaty if Darryl does him the favor of watching his dog while he's away. Darryl gets talked into it, but when he goes over to Mr. Park's house to feed the dog, the dog is dead. Darryl, instead of just telling Mr. Park the truth, freaks out and buys a look-alike Dalmation. When Mr. Park gets home, he of course isn't convinced that this new dog is his. When Darryl admits the truth Mr. Park laughs because his dog was actually dead BEFORE he left for his trip and he just set Darryl up.