Last summer, the Pittsburgh Zoo euthanized its only elephant calf — Little Bit, a premature three-month-old rejected by her mother who had stopped eating due to painful teething. PETA criticized...

“Cruelty is Not Entertainment,” was the protesters’ creed. It was printed, along with the slogan “Pittsburgh Zoo and Aquarium Enslaves and Kills,” on the signs the protesters held as they...

With Labor Day signalling the end of the summer season for many Pittsburghers, a number chose to take the day off to visit the Pittsburgh Zoo and PPG Aquarium. Most came to see the animals. But after...