Scrat is a "saber-toothed squirrel" that appears in the Ice Age film series. He is best known for being obsessed with acorns, constantly putting his life in danger to obtain and protect them.
In "Sibling Rivalry", Scrat is shown trying to take a nut out of a side of a glacier, and Peter Griffin tells him off for trying to steal his nuts. In doing so, he angers Scrat and he attacks him with Peter screaming "My nuts, my nuts!". The scene was included as a promotion for the film Ice Age: The Meltdown.