Running out of time
Whether it's due to habitat loss, poaching or unintended poisonings, animals like the cheetah are seeing their populations drop lower and lower. Conservation efforts, including protected reserves and bans on hunting and poaching, may be too little too late to stop the downward spiral many animals are experiencing. These 11 animals in particular once had the the run of the wilderness, but now they're on the brink of disappearing.
This story has been updated with new information since it was originally published in Oct. 2009.