two pets, one tank, slowly

Hermes and Khanun have been living together since summer, and yesterday was the first time they were in the same room without a fight. Hermes is a Munchkin cat, very active, and he likes to sit on the tank. Khanun the dragon mostly just stares back. I was afraid that Hermes would try to climb the glass, but he just sat there like a king watching a museum piece. I keep the tank closed. The cat is not allowed to touch the lid. He gets treats when he behaves, I think he understands. Khanun is very calm, he does not care about the cat at all. Next month maybe I will let the cat sit next to the tank in the living room with the door open.