20-Year Prospect
There will still be plenty of jobs around in twenty years.
Unless the dog flu gets worse, spreads to cats, and takes out the whole animal kingdom (in which case we'd be in a pickle ourselves), animals will need saving and defending from humans.
Sadly, humans as a species will probably always have a dark (or just neglectful) side, and the animals that we share our planet with will probably always need your help.
That is, until we get robot animal sentries to keep the dangerous ones away and the nice ones safe...but Shmo—er...Lockheed is gonna keep that one under wraps for at least another twenty years. At least until the robots stop talking about the inevitable canine uprising.