豹子的英文单词是'leopard'。

Leopard is a member of the big cat family, Panthera pardus, and is known for its distinctive spotted coat. They are found in various regions of the world, including Africa and Asia. The leopard is a solitary and elusive animal that is known for its speed, strength, and agility. They are excellent climbers and can often be found resting on the branches of trees. The leopard is a carnivorous animal, and their diet consists of a variety of prey, including deer, gazelles, and smaller mammals. However, they are also known to occasionally hunt domestic livestock, which can create conflicts with humans. Despite being a powerful and feared predator, the leopard is also a vulnerable species, with populations declining due to habitat loss and poaching for their fur and body parts.