The zoo has been around since 1900, when it opened with 123 mammals, 65 birds and 33 reptiles. It now has more than 340 animals representing 115 species.

Fun facts: Marmosets, which can be seen at the Virginia Zoo, are among the world's smallest primates, often weighing less than a pound. Pygmy marmosets are the smallest of the species, weighing in at a minuscule 3 ounces.

Hours and admission: The zoo is open from 10 a.m. to 5 p.m. every day except Thanksgiving, Christmas and New Year's Day. Admission is $3.50 for adults; $1.75 for children aged 2 to 11, and $3 for senior citizens.

Address and directions: The zoo is at 3500 Granby St., Norfolk, Va. Granby Street can be reached from Interstate 64. For more information, call 757-624-9937 or visit the zoo's Web site at www.virginiazoo.org.

The Pittsburgh Zoo

Exhibits at the Pittsburgh Zoo, one of only six zoo-aquarium combos in the country, include an Asian forest, an African savanna, a tropical forest complex, a cheetah valley and the aquarium, which opened in June 2000. Niches of the World, a look at various habitats, features a rare Komodo dragon.

The aquarium has more than 4,000 water creatures, ranging from penguins to piranhas. Exhibits include a crawl-through stingray tunnel, a two-story open ocean tank made to resemble a real ecosystem and an Amazon rain forest exhibit.

One of the most popular exhibits is the African savanna, which is now home to two baby elephants, said Rachel Capp, manager of public relations. A little girl was born in September 1999, and a boy was born in September 2000.

Fun facts: Elephants live to be 60 or 70 years old. They are considered adolescents until they are 10 to 14, the age at which the male will typically leave the herd.

Hours and admission: The Pittsburgh Zoo and Aquarium are open every day except Dec. 25. From Memorial Day to Labor Day, the hours are 10 a.m. to 5 p.m. Winter hours are 9 a.m. to 4 p.m. Admission prices range from $5 to $8.

Address and directions: The zoo is at One Wild Place in Pittsburgh, near the Highland Park Bridge off 28 North. For more information, call 412-665-3640 or 800-474-4966, or visit the Web site at www.zoo.pgh.pa.us/.