I didn't realise either, and with my first toothless cat, I spent months putting her dry food through the blender until one day she pinched Gingers normal biscuits and I realised she could eat them perfectly well!! Ginger used to sulk if he didn't get his supper biscuits, although he needed a hand with some of them, as he dropped them a lot, and they were too sticky for him to get back out of the bowl.