Thanks for posting this question! I actually recently got my first ball, and went to the pet store and they recommended small frozen rat for him. Even though I had done a ton of research before I got him, through the internet and YouTube, I wasn’t sure how much he weighed and didn’t know. Bought a scale and turns out he is only 320g. I was going to ask if the small rats were too big as well even though he didn’t have too much trouble just took him a good while to get it down. So next issue, none of the pet stores around me cary anything smaller than a small rat. Where do you guys get your feeders? Any reliable places you order from? Thanks!