A couple dozen steps. Two fistfuls of tomatoes. A perfectly upright posture. That was all it took to launch Louis, an 18-year-old male western lowland gorilla at the Philadelphia Zoo, to viral ...

Born June 28, the baby gorilla has had to be hand-reared by zoo staff. As the baby grows, this becomes more difficult and poses future challenges for the little one. Jeremy Dwyer-Lindgren Woodland ...