Cats typically only meow at humans, not at other cats. Adult cats rarely meow to each other because they communicate through other means like scent, body language, and facial expressions. The meow is primarily a vocalization cats use to get attention or communicate needs to humans, a behavior that likely developed during domestication as cats see humans similarly to maternal figures and use meowing to solicit care or interaction. Kittens meow at their mothers, but as they grow, meowing at other cats usually stops, continuing mostly as a way to communicate with humans. Cats can also develop different meows to convey different messages such as hunger or wanting to go outside. This vocal behavior is less common or absent in cat-to-cat communication, which relies more on non-vocal signals.