Pretty Boy is a bossy, big-mouthed canary with a Napoleon complex. He yells at everyone for everything. He loves seedbells and soaps. He also has a wonderful singing voice.
Pretty Boy is a canary with green feathers and an orange beak.
Pretty Boy is featured in the subplots of the series along with Jolly the Cat and they have adventures of their own. They however left the house twice in the series, when they thought they were each missing and when Leonard and Scott brought them on pet day. In one episode, Pretty Boy migrated and Scott and Leonard went to get him back.
In the movie, he stays at home with Spot and Jolly while Leonard and his mom are on vacation. After spot leaves to see Dr. Ivan Krank, he and Jolly cover for him. Later, they find out that Dr. Krank turns animals into mutants and go to save Spot. After hitching a ride on a plane, hitching a ride with a biker gang, and getting lost in Cuba, they get to Florida by a garbage truck and find Leonard and they find out about what happened to Spot. Spot (who is now a man) arrives and they warn him that Leonard's gonna turn into a dog. When they get to the lab, a battle and an explosion begins turing Krank into a mouse and Spot back to a dog. Afterwards, they hid under the RV's beds to get home as part of Spot's plan.
- Pretty Boy's voice actor, Jerry Stiller, also voiced Uncle Max in The Lion King 1½. Coincidentally, both that and the Teacher’s Pet movie came out in the year 2004.
- In one episode, Pretty Boy gets the last line: "When we get home, I'm gonna give him such a peck on the--".
- In the show, Pretty Boy sings operatically, but in the movie, he sings in his normal voice.