From left to right, a female Amur tiger named Rory and Amur leopard named Rafferty are the newest residents at the Philly Zoo. Photos courtesy of Philadelphia Zoo
The Philadelphia Zoo's family of big cats is growing.
Why it matters: The new tiger and leopard from Russia's Amur River Valley are endangered and have been paired with existing big cats at the zoo for breeding.
State of play: Visitors can now see the female tiger named Rory and male leopard Rafferty inside their habitats at Big Cat Falls.