Definitely a Bengal Nolan. My daughter used to live across the enclosed, shared green space from a lady who had one, but had to take it out on a lead. It would attack other cats, once chased a dog away. I understand from the ‘owner’ that you never know what you get with a Bengal: some are not aggressive and some are. Tell your mum to be careful if she has a cat or a small dog. My daughter has a lovely, quiet, affectionate cat which used to dive for home when the Bengal was about.
When the Thought Police arrive at your door, think -
I'm out.