“Philadelphia Zoo has provided a unique and innovative ... 5:30-8:30 p.m. to take sELFies with guests inside the zoo’s treehouse. Also returning are fan favorites like Penguin Prismatic ...

A pair of critically endangered, nearly 100-year-old Galapagos tortoises at the Philadelphia Zoo have become first-time parents. In an announcement Friday, the zoo said it is "overjoyed" at the ...