Best clicks for virtual visitors are found under Meet the Animals and Exhibits. Click around and you'll find articles about Animal Art, Animal Care, and a whole section on animal conservation. "In recent years, conservation biologists have drawn our attention to a worldwide decline in wild populations of frogs, toads, and salamanders – a phenomenon that has come to be called the Global Amphibian Crisis."
In addition to an annotated photo gallery of animals (listed under Animals in the main navigation menu) also check the Magazine section. Lincoln Park Zoo offers PDF versions of their quarterly magazine that is chock full of interesting articles on animal behavior and conservation studies. Also listed under Magazine, you'll find movies and slideshows. Don't miss Feline and Dandy, two "impressive residents" of the Kovler Lion House.
Places to explore in the LA Zoo Animals & Plants section include Animal Facts ("Birds are the only vertebrates that have feathers. All birds are warm-blooded, and they lay eggs."), Animal Health, the Elephants of Asia, and the Campo Gorilla Reserve. "Gorillas are the strongest and largest of the great apes, a primate group that also includes chimpanzees, bonobos, and orangutans. "
Highlights of The National Zoo site from Washington, D.C. are the live animal cams, photo gallery slide show, and the two giant pandas Mei Xiang and Tian Tian. "Giant pandas are black and white bears that live in temperate-zone bamboo forests in central China. Among the best recognized—but rarest—animals in the world, they have come to symbolize endangered species and conservation efforts." You'll find them in the drop-down Animals menu.
First stop on our virtual tour of the world-famous San Diego Zoo is their kid section for their zoo games, animal crafts, science experiments, and profiles of "Wildly Famous Featured Creatures." The zoo does a lot of work in animal conservation, and their site has an excellent section on research efforts in China, the Pacific Islands, the southwestern United States, the Caribbean Islands, and South America. For specific animal backgrounders (for reports and such) return to the main zoo homepage, and click on Animals.