A lion is a type of animal classified as a mammal, specifically belonging to the family Felidae. Known scientifically as Panthera leo, lions are often referred to as the "king of the jungle" due to their majestic appearance and social behavior. They are unique among big cats for their social structure, living in groups called prides, which consist primarily of related females, their young, and a small number of males. Lions primarily inhabit savannas and grasslands and are apex predators, preying on various herbivores. Their roar can be heard up to five miles away, serving as a means of communication among pride members.