Some of the posters here, just wow. There seems to be a stunning lack of knowledge about biology.
The world is full of food webs and ecosystems. There are herbivores on the bottom, and carnivores on the top. Call it the Circle of Life! Carnivores eat herbivores.
Like it or not, WDW offers animals of all kinds, an easy banquet.
The same elements that draw humans: ample water and ample food, ALSO draws just about everything else that lives in the Florida ecosystem.
Where there is grass, rodents and insects, there's probably something that EATS grass, rodents, and insects.
A sign asking folks not to hand gators food isn't going to change that. Every day, thousands of people thoughtlessly drop food everywhere at WDW. Where there are ants and roaches, there will be lizards, and so it goes.
Truly, we should all be glad the ecosystem is as robust as it is. Animals that eat trash and rodents are some of our best friends.