David joins the uproar!

Sarah McLachlan and David Archuleta Join the Uproar to Save Big Cats

Musicians Sarah McLachlan and David Archuleta (as well as Bones actors Tamara Taylor and John Francis Daley, and The Simpsons' Yeardley Smith) are ferocious for felines.

The celebs are teaming up with National Geographic's "Cause an Uproar" campaign to raise awareness about the disappearing populations of lions, tigers, and other big cats.

Just in case you doubt that the king of the jungle needs help: Lions numbered about 450,000 in the 1940s, but now only 20,000 are left. The three main issues facing big cats are habitat loss, illegal hunting and retaliatory killings.

Watch Sarah and David cause an uproar for big cats around the world:

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