Just had to share my new discovery. Bella absolutely loves the antos chews (the ones that come in crocodile/ hedgehog/ stick shapes); I've been getting her the medium-ish sized stick ones but they only last a minute. Today though I got her the xxl size stick and chopped it into 3 pieces - success! Took her more like 10 mins to chew as its short and chunky but still only about the same amount as a medium-size. (plus works out much better value for money)