People think that eagles are birds that catch unsuspecting fish. Most eagles also catch different sizes of animals ranging from a mouse to a deer. Eagles main food is fish. Eagles will sometimes eat snakes, too. They also eat ducks, rodents, and road kill. Eagles also steal from other birds. Eagles puncture their prey. Eagles first pick is to steal, second is to scavenge, and third is to hunt and kill. The otter and osprey are the most common animals the eagle steals from. Here are ways the eagle steals: aerial chases or flying attack.