The average American eats over 1,700 pounds of food every year, but that's no match for the eaters of the animal kingdom. While humans may know when to say when, some creatures have no clue about the concept of moderation. Some critters like to create their own personal buffet with nature's leftovers, or while others think the ultimate recipe for a home-cooked meal includes regurgitation (to put it politely). Gluttony may be one of the seven deadly sins, but for the top gluttons of the animal world, it's just a way of life.
With a nickname like "Garbage Can of the Sea" it's no wonder that the tiger shark will eat just about anything in their path. What may be trash to humans is treasure as far as this shark is concerned — license plates, shoes, and parts of a suit of armor are just some of the things that have been found in their stomachs. Come to think of it, these sharks could probably do a lot to help keep our oceans clean. However, sometimes they bite off more than they can chew, forcing their binge to become a purge. By far, though, their most nasty eating habit starts before they're even born — tiger-sharks-to-be have actually been filmed turning on each other as a tasty treat. Now that's just gross.