The Nile crocodile, which inhabits sub-Saharan Africa, can grow to 21 feet long and weigh one and a half tons. It eats just about anything — including humans.

Now four have been found in Florida, although none were that large. They were probably brought from South Africa and kept as pets or zoo displays.

One was a hatchling about a foot long sitting on a porch in Miami. Another was found on the property of a private zoo in Homestead, Fla., and a third, a 10-pound female, was captured in a public park, also in Homestead.