The Wubbulous World of Dr. Seuss (1996)

S1E15 Max the Hero

Max, the Grinch's loyal dog, becomes a town hero after saving a baby's life. Mayor Stovepipe invites Max to live in the mayoral mansion, leaving the Grinch completely alone. To fill the void, the Grinch starts interviewing new pets, insisting he doesn't miss Max at all. But as each candidate fails to measure up, he begins to wonder if he's really as fine without his old friend as he claims.