Good question. I don't know anybody who would feed a 200g snake a large rat
Going on the information, I *assumed* the snake had to be larger than 200g. Feeding a 'smaller' rat could well possible mean a rat that is about 40g (my smalls are 55g). This is not out of the ballpark for a snake- even a 200g snake!
Also, I don't know of anybody who has a little 200g snake that would feed an enormous 85g large rat to.... I gave the OP the benefit of the doubt for having brain matter![]()