The cat is similar in anatomy to the other feline species: it has a strong flexible body, quick reflexes, sharp teeth and retractable claws adapted to killing small prey. Its night vision and sense of smell are well developed. Cat communication includes vocalizations like meowing, purring, trilling, hissing, growling and grunting as well as cat-specific body language. A predator that is most active at dawn and dusk (crepuscular), the cat is a solitary hunter but a social species. It can hear sounds too faint or too high in frequency for human ears, such as those made by mice and other small mammals. Cats also secrete and perceive pheromones.

Female domestic cats can have kittens from spring to late autumn, with litter sizes often ranging from two to five kittens.[9] Domestic cats are bred and shown at events as registered pedigreed cats, a hobby known as cat fancy. Population control of cats may be effected by spaying and neutering, but their proliferation and the abandonment of pets has resulted in large numbers of feral cats worldwide, contributing to the extinction of entire bird, mammal, and reptile species.

It was long thought that cat domestication began in ancient Egypt, where cats were venerated from around 3100 BC, but recent advances in archaeology and genetics have shown that their domestication occurred in Western Asia around 7500 BC.

As of 2021, there were an estimated 220 million owned and 480 million stray cats in the world. As of 2017, the domestic cat was the second most popular pet in the United States, with 95.6 million cats owned and around 42 million households own at least one cat. In the United Kingdom, 26% of adults have a cat with an estimated population of 10.9 million pet cats as of 2020.