A cougar refers to an older woman who seeks sexual relationships with younger men. She is often associated with the MILF (Mother I'd Like to Fuck), although there are differences, mostly based on a woman's level of attractiveness and age. The New York Times' definition is more specific. It states that a cougar needs to be aggressive and older than 40 years old. Some people refer to an older woman who has a relationship with a younger man as a cougar, even when she is not actively seeking sexual attention from others.