Check out this video of a most courageous cat taking on one and then two hungry alligators. Rawr! The claws come out at one stage as the cat takes a swipe at the alligator's snout!
It would seem the cat was possibly defending the humans? Hard to say with out the context. The Alligators can't have been too hungry as they surely could have had that cat in their jaws with one quick snap? Maybe they don't move as fast on land as in water. Still... that's one brave cat!