Burmese pythons are killing off mammals that would normally keep Florida's rat population in check. A new study found that parts of the Florida Everglades were becoming overrun with rats as a result. It may be good news for the cotton rats, but it could spell serious danger for humans. Florida's Burmese pythons have been known to prey on birds, reptiles, deer, and even alligators. But one thing they don't seem to have a taste for is cotton rats. And the rats are thriving because of it. ... cotton rats "dominate the community" in parts of the Florida Everglades where...