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Sometimes there's as little as a five-year age difference between a cougar and her cub, sometimes it's 20 (or more).
It really doesn't matter as long as everyone knows what they're looking for and what they're getting.
When a Twitter follower, a travelling salesman, told him he shared the same problem, Russell added: 'I sympathise.
They're often more open minded than their older counterparts, less judgmental, and are able to see the humor in almost any situation, which is what makes them such a compatible cougar companion.
A free-spirited 35-year- old woman may have more in common with a twenty-something looking to explore the world than a career-focused man her own age, who may be too time-stressed to take time out for romance and enjoying life.
Cougars bring their experience in life (and relationships), their maturity, their confidence (in and out of the bedroom), and their ability to see the bigger picture.
Cougars typically take good care of themselves, from going to the gym and salon, or whipping up a home-cooked meal when the mood strikes.