Lerk

"5, Tuesday. Crawl out of cave. Find Gragg. Eat him. Burn tundra. Find Lerk. Eat her."

- Unidentified sentient creature

Lerk was a female individual. A creature once planned on finding Lerk and eating her.

Behind the scenes
Lerk was mentioned in Monsters and Aliens from George Lucas, a book published in 1993. Lucasfilm employee Leland Chee, who maintains the Holocron continuity database, has indicated that information contained in the book is non-canonical.