Bravo to the Pittsburgh Zoo & PPG Aquarium for thumbing its nose at People for the Ethical Treatment of Animals regarding its demand for a federal investigation into the encounter between a white-tailed deer and polar bears to see if the zoo violated the Animal Welfare Act (“Pittsburgh Zoo responds to PETA demands for investigation,” Nov. 15 and

Giving PETA or other promoters of animal “rights” a say in how zoos are managed will only bring these groups one step closer to their real goal: shutting them down. At the end of the day, extending “rights” to animals means reserving fewer “rights” for people — including the right to teach our children about the animal kingdom without disturbing natural habitats.

Zoos and aquariums provide this remarkable service, and we should all be grateful for it.