Well my girl is 7 months and around 274g. She has eaten a small live rat for me two weeks in a row without any problem. I went to feed her tonight and no go. The rat was a little larger then the other two and I didn't realize until I saw them together. I think it was close to last weeks but maybe I should ask for one size down? The last small rats were just slightly larger than her widest. This one is just a touch larger still. I am not too worried because at least I know she has eaten but still a little frustrating. It is hard to judge the size of the rat because I don't know if you measure with the rats hind legs stretched or hunched.
Any thoughts would be reassuring.