Real-life Dr. Seuss creatures

A pair of 49-day-old emperor tamarin twins, nicknamed Rice and Beans, clutch to their dads back Friday, July 27, at the San Francisco Zoos Primate Discovery Center in San Francisco. The twins are the first emperor tamarins born at the zoo in the last 10 years and are the first for the parents Anna and Big Twin. Emperor tamarins are primates and they inhabit tropical rain forests, living deep in the forest and also in open tree-covered areas. (AP Photo/San Francisco Zoo, Amy Frankel)