The toothbrus looks a little flimsy but actually gets the job done. I think it's the perfect size if it was any bigger you wouldn't be able to get it in the cat's mouth. I just started brushing my cat's teeth and he tolerates it fairly well but he loves to lick the toothpaste as I'm trying to brush his teeth.
My kitties love this toothpaste. I have one that will lick it right out of the tube!