The cougar in dreams shows the power you are carrying with yourself. You feel the person who is capable of doing the things he likes and not feeling guilty that enjoying the life to the fullest. The cougar could be applied not only to the dreamer, but to the person that is very close to him and have these features such as being a strong person and believer in himself.
Dream dictionary: cougar dream meanings
The cougar in a dream symbolizes the strength, wild aspects of your personality, elegancy and beauty. Mostly the dream is associated with the abilities of the women and their influence in the world.