Krypto the Superdog (2005)

S1E14 Old Dog New Tricks

Krypto and Streaky encounter a fire-themed Dalmatian named Smokey, who is preoccupied with thoughts of a new puppy. Streaky mistakenly believes that this newcomer is meant to take Smokey's place, leaving Krypto baffled by the idea. In a burst of creativity, Streaky decides to have Krypto act as Smokey's super stand-in, leading to a series of amusing situations as they navigate the misunderstanding together.