MissSkittles
Chameleon Enthusiast
While cats can be amazing at jumping high, it will help safeguard your other chameleon to make sure that his enclosure is high off of the floor - I have the tops of mine about 7-8’ high. Try not to have anything nearby that can be jumped from and if need be, you could reinforce the screen top by attaching securely with screws, a piece of hardware cloth. Additionally, having lots of plant cover inside the enclosure will help prevent the cat from seeing the chameleon a little.