S2·E43 Muffin Cone

When Muffin won't stop sucking her thumb, Aunt Trixie puts her in a dog collar to help break the habit. Muffin is angered, while Bluey and Bingo are frustrated that their cousin can't play with them due to her restricted movement. The sisters think of games that Muffin will still be able to join in with while wearing her "cone of shame".