Gee, talk about taking on more than you can handle!

An unusual clash between a 6-foot (1.8m) alligator and a 13-foot (3.9m) python has left two of the deadliest predators dead in Florida's swamps.

The Burmese python tried to swallow its fearsome rival whole but then exploded.
[...]
The python's remains with the victim's tail protruding from its burst midsection were found last week. The head of the python was missing.
[...]
He said the alligator may have clawed at the python's stomach, leading it to burst.
[...]
There had been four known encounters between the two species in the past. In the other cases, the alligator won or the battle was an apparent draw.

http://news.bbc.co.uk/2/hi/americas/4313978.stm