Colo(u)red frosting? Animal shapes? Oh, sure, animal crackers! Recipes online, for example-
http://buttermeupbrooklyn.com/2013/10/pink-and-white-frosted-circus-animal-crackers
Or buy Nabisco Circus Animal Crackers and add colored frosting.
Or buy Mother's Circus Animal Cookies or Nabisco Classics Iced Animal Cookies, etc.