Dr. Natalia Borrego, a biologist who researches African mammal behavior, discovers that lions are the smartest cats in this video from Super Cats: A NATURE Miniseries. Social animals are more intelligent, but until now, no one has demonstrated that lions follow that trend. In the accompanying classroom activity, students analyze data from Dr. Borrego’s experiments comparing lions to other social animals and to solitary cats. Additional support materials are available, including discussion questions and vocabulary.