We were going to do different sizes, but we don't see how you can get 34 biscuits out of one batch. That's why we were wondering what size cutter gives you 34 biscuits. Thanks for answering!!!

It really doesn't matter. You can use any size. The cooking time will be about the same because they will be the same thickness. I honestly can't remember what the size was of the ones in the photos. I've been through many cookie cutters since then. They always seem to fall apart on me!

I've never tried. I'm sure it would if you blitz the oats to flour-like consistency first, but the dough will take some mixing. You'd need to mash the banana to a puree before you start and make sure you use drippy peanut butter (that's natural - some more processed ones contain ingredients that aren't good or are toxic to dogs). It needs to be drippy and not really stiff otherwise you won't stand a chance of mixing it all up by hand. At worst if it fails and you can't roll it out and cut it you could roll it into balls with your hands and your dog could enjoy them raw. Just keep them in the fridge or freezer. My dogs love the mixture raw so it won't be wasted. Hope that helps!

The nutritional info is per cookie.

That's right, yes!