PENGUIN: The American Sign Language (ASL) sign for "penguin"

A common version of the sign for PENGUIN has the hands at the sides making a waddle movement:

(Note: There may be more versions, check with your local Deaf community)

Sample sentence: PENGUIN POOP HOW-OFTEN? (How often do penguins poop?)

If you want to learn more animal signs, check out:

Notes: 

Also see: ANIMALS