The Snowths are furry pink creatures with horns and round, yellow lips who sing the "do doo do doo doo" backup vocals in versions of "Mahna Mahna" that have appeared on The Ed Sullivan Show and The Muppet Show. Both Snowths were performed simultaneously by Frank Oz, who performed one puppet on each arm; as a result, the Snowths' arms could not be controlled by arm rods and swung freely from side to side.

Unlike their singing partner Mahna Mahna, the Snowths made relatively few appearances on The Muppet Showoutside of their performance of "Mahna Mahna" on episode 101.

In recent years, the Snowths appeared without Mahna Mahna in a sketch on episode 107 of Muppets Tonight that parodied the classic sketch. They also performed "Mahna Mahna" with Kermit the Frog on the 2002 Jerry Lewis MDA Labor Day Telethon, where they were performed by Julianne Buescher.

The Snowths moved their arms with hand rods for the first time at the 2001 show The Muppet Show Live, where one of them puts their hands over their mouth when Mahna Mahna goes crazy. They also appeared in the 2005 "Bandanana" commercial for the Australian charity CanTeen, in which they, along with Mahna Mahna, wore green bandanas.

The Snowths' recent appearances include Studio DC: Almost Live! where they sang backup for Miley Cyrus performing her song "G.N.O. (Girls' Night Out)". On November 17, 2011, they appeared on Good Morning America, and were performed by Matt Vogel and Peter Linz. When the Snowths appeared during Jim Henson's Musical World, they were both operated by Kevin Clash. They also appeared in the "All I Need is Love" music video, performed by Steve Whitmire and Eric Jacobson.

In Jim Henson's Designs and DoodlesAlison Inchesexplains that the characters in Jim Henson's original sketch were called Snouths, based on a combination of the words snout and mouth. However, by the time the characters appeared on The Muppet Show, the spelling had changed to Snowths. The characters are referred to as such in The Muppet Show Book, on the back of The Muppet Showalbum, and on all future album releases.

In The Muppets, the narrator for the home video version's descriptive English track describes them as "two pink Muppets vaguely like cows."