What can be without this teal platypus? You can hear and see that in Everything's better with Perry's song from the beginning of the movie Phineas and Ferb the Movie: Across the 2nd Dimension. There Phineas and Ferb were doing everything with their loyal pet Perry. Even cleaning their teeth. Phineas and Ferb with Perry Brushing Teeth Sticker for you to remind you to do your daily morning ritual with your teeth.