HomeZoologyBugs & Insects (Entomology)Ants Eat Toothpaste? Weird Things That Ants Eat Ants Eat Toothpaste? Weird Things That Ants Eat Staff Writer Bugs & Insects (Entomology) Pin it Share Tweet Reddit Tumblr Peanut Butter Some ant species favor greasy foods such as the thief ant. Peanut butter is a favorite treat as well as any type of grease or oil such as vegetable oil or shortening. Prev2 of 9Next Tags:AntsRelated Posts Do Ants Have Muscles? They Sure Do! Do Ants Eat Termites? The Many Termite Predators Do Ants Bite? Signs of Termites in Your Home Why Do Bees Sting? How Do Ants Communicate?