I recently saw a commercial for Colgate toothpaste featuring a beaver. It reminded me of the Bristol-Myers Ipana toothpaste commercials from the 50's, staring Bucky Beaver. As a famous TV rodent, I thought it appropriate to dedicate a page to him and managed to find a picture and sound clip. I suspect one person did all the voices on the sound clip.
In the movie Grease, during the slumber party one of the girls sings the Ipana song, "brusha brusha brusha, get the new Ipana".
Picture from: Imaginary World.
Sound Clip from: Wave Themes.