Can a crocodile swallow a human?

No they don't. With small animals such as rats, and small birds, they chew. With larger animals such as wildebeest, deer, and maybe even humans if they're that hungry, they do the death roll. What that is the Alligator or Crocodile will bite it's victim, then it will roll until the limb of the animal is completely ripped off so the Alligator or Croc can chew it.