Lots of domestic animals are crossbred to make new breeds. Among dogs, for instance, a Siberian retriever is a cross between a Siberian husky and a Labrador retriever, while a cockapoo is a cocker ...

A nine-week-old liger named Goliath is currently making headlines. The unusual big cat cub was born in mid-May at a private zoo in Zaharesti, Romania. PETBOOK editor and biologist Saskia Schneider ...