I don’t usually like taking photos with the flash. I don’t like the way the lighting and colours and shadows look in a photo taken with a flash, and, especially with photos of cats, there’s a better than average chance you’re going to end up with glowing lazor eyes. But there is one thing that flash photography does really, really well: stopping action you can’t see with the naked eye.
Like what it looks like when a cat shakes his or her head. This is a thing which, when frozen, can be quite amusing.