This photo provided by the Smithsonian’s National Zoo, taken Thursday, Nov. 29, 2007, shows four baby Solomon Island leaf frogs. born Nov. 20 at the zoo in Washington. They skipped the tadpole phase emerging from their eggs as fully-formed frogs known as �froglets.� The Solomon Island leaf frog is one of the few species in the world to do this. In the wild, this species is found in the moist lowland forests of Papua New Guinea and, as its name implies, the Solomon Islands. Although not yet endangered, these frogs face many of the same environmental challenges, such as pollution and loss of habitat, that have put many amphibian species in jeopardy. (AP Photo/Jessie Cohen, Smithsonian’s National Zoo)