Such physical barriers might be difficult to carry out if an animal lives in a large outdoor space like the Dallas Zoo’s African Savanna exhibit.

DALLAS — The Dallas Zoo welcomed a new bird Friday, one of less than 50 in zoos across the U.S. The bird, a Rüppell’s griffon vulture chick, hatched at the zoo this week. The Zoo announced ...

When the Dallas Zoo was founded in 1888, it housed two deer and two mountain lions. More than a century later, the zoo – which is the oldest and largest in Texas – has grown to shelter more ...