Animal crackers are a type of snack food that have been around since the late 19th century. The term 'animal crackers' is derived from the shape of the crackers, which are usually made in the form of various animals. The crossword solutions for the term 'animal crackers' are MARX (4 letters), ZOO (3 letters), NUTS (4 letters), and LOCO (4 letters). Marx refers to the Marx Brothers, a comedy act popular in the early 20th century, while ZOO refers to the animal-filled enclosures found in many cities. NUTS refers to the fact that animal crackers often contain NUTS as an ingredient, and LOCO is a slang term for crazy, which could refer to the whimsical nature of the animal crackers.