Dogs used to be the only animal helpers, but then miniature horses, pigs, and a few other therapy animals came along. But now? Monkeys are making the news, because with their quick actions, fast learning curve, and opposable thumbs, these smart primates are being trained to help those who need it most. From disabled elderly folks to injured veterans and wheelchair-bound individuals, these monkeys are assisting others with help—and friendship—at their fingertips.