Alligators eat fish, birds, and mammals, and really just about any animals they can catch. They will feed on fish, crustaceans, invertebrates, fish, turtles, … Alligators eat depending on their size and age. Alligators are powerful and opportunistic predators, and they will eat anything they can catch, including pets and humans, if the opportunity arises and the alligator is hungry. Younger alligators eat insects, shrimps, snails, small fish, tadpoles and frogs. (What Do Alligators Eat) The American alligator is by far the most apex predator within its range. Alligators have about 80 teeth and when an alligator loses a tooth, it regrows. What the alligators eat depends largely on the size and the age of the alligator, and the size of the prey, as also on the habitat that they live in. Alligators are primarily carnivores, but investigations of dead alligators have revealed that they also eat fruits like elderberries, citrus fruits and wild grapes, directly from trees that overhang over their habitats. Humans are mammals that eat alligators. Alligators are classified under the order Crocodylia.They are giant reptiles notable by their rounded snouts and black color. The alligators' food changes with age. Adult alligators eat fish, birds, turtles, other reptiles and mammals. However, as they become mature, they graduate to eating larger preys, like gar, small mammals, water birds, turtles, deer, smaller alligators and many other reptiles. Young alligators are known to live on a diet comprising of snails, fish, worms and crustaceans. They are considered to be opportunistic feeders and like other alligators, the prey is primarily determined by the age and size of the animal. Alligators swallow their prey whole. Wiki User January 03, 2009 5:54PM. How can you access to guests record to provide personalized and quality valet service. Their conical teeth are used for catching the prey, not tearing it apart. Young alligators generally will eat small fish, snails, crustaceans […] Alligators eat primarily turtles, fish, snakes and small mammals that are plentiful in the freshwater areas where they live. What Do Alligators Eat? They are primarily carnivores, but investigations of dead alligators have shown that they do eat berries, citrus fruits, and grapes that are in their natural habitat! What mammal eats an alligator? The young feed on insects and on freshwater shrimp. Unanswered Questions. What kind of mammals do alligators eat? Alligators are primarily carnivores feeding on prey like fish, mollusks, other reptiles, birds and small mammals …