Racoon are unusual for their thumbs, which (though not opposable) enable them to open many closed containers doors. They are omnivores with a reputation for being clever, sly, and mischievous. Raccoons range from 20 to 40 inches in length (including the tail) and weigh between 10 and 35 pounds. The raccoon's tail ranges from 8 to 16 inches in length. Raccoons are nocturnal and omnivorous.