In the United States there is an extreme need for more animal rescues and the dedicated people who make them possible. The number of orphaned and injured animals is growing. Many existing shelter and/or rescues are full. This is why it is so important that people are educated before buying that "cute" or really "cool looking" pet. There is nothing to do with an unwanted pet other than try to take it to shelter, providing they have room, or as many do, try releasing it out into the wild and hope it can survive. Many wild animals belong just there - in the wild. Nature has it's way of taking care of the wild life, but when so much animal habitat is destroyed many have animals have no where left to go. Below is a list of links to animal shelter/rescues that may provide you quality information. Some treat and release injured or neglected animals back into the wild and some offer adoption of rescued animals.
Kyler Laird's animal rescue resources
The Humane Society of the United States Home Page
Petfinder Home Page
Arrowhead Reptile Rescue
Wildlife Rescue and Rehabilitation of Prospect Heights, Illinois - Hawk, Coyote, Egret, Swan, Turtles, Raptor, Mammals, Birds, Reptiles, Charity, Education, Hospital, DNR
Wetlands and Wildlife Care Center of Orange County