Claudius (part abyssinian) would manage to get himself on top of the door where he could lie and look down on the world. Perhaps that is what Mosi is trying to do? He loved to stretch out along the top of the door like a lioness in a tree, spare legs drooping gracefully down either side. Sometimes he would jump down onto the shoulders of passing people, which could be a little disconcerting for those who had not realised he was there.

Maybe if you put a climbything near the door he will do the same. Warning though, closing the door with a cat on top can lead to unpleasant consequences ... I only did it once and caught it in time, but

both of us got a nasty fright!!