They are very hungry, eating everything slower than them, bulking up from being more dormant during the cooler winter season. Now that its getting warm again, mating season is going full blast.
Some very stupid people actually feed gators thus making them not afraid of people ... fed gators look upon people as food sources. When you get too close to fresh water pond / stream / canal areas and aren't being careful, you can easily get grabbed and dragged into the water, drowned, and eaten.
We've lived on a brackish water canal since 1994 and have seen gators by our dock 3 times. One time was when I was planning to get in the water to wire up my boat lift under the dock. I fortunately saw the 6 foot gator before entering the water.
When I called the gator nuisance toll free number, (I think it was 1-800-GET-DEAD) I was asked if the gator had attacked or eaten any people or pets. When I said not yet, they told me to call back when it did and hung up on me.
Since it is illegal to use a firearm here in the city, I got out my home made potato shooter (which will loft a spud several hundred yards) and blasted that bad boy right between his eyes. He swam away at gator warp speed and I finished the electrical work under the dock several hours later with the help of a friend ... who happens to swim a lot slower than me.