When we bought the baby gates we really liked the cat door and thought it would be useful for our cats. Except our dogs were able to wiggle their way threw, that was back in December 2010. I guess we didn't realize that there's a weight limit 55lbs and over ;o)
Lenny is around 20 months old and is not as wide as Abbey, so he can still make it through. Last time we weight him, he was 51.5 lbs.