Another interesting Helmi cat photograph. The big question is why this cat has an arched back. This is a studio photograph, probably taken at a cat show. The cat is a glamorous show cat.
Bengal cats are active in the photo studio. They are pretty confident cats and move around a lot trying to grab the cat tease which is used to make the cat active. I suspect that this is a fleeting moment when this cat was being defensive and making himself look larger than normal. That is the only time, normally, when you see a domestic cat with an arched back.