How did you present the p/k rat and was it still "live" warm? Sometimes you have to give it a quick blast with a hot blow dryer if it cools too quickly. Also if she's used to multiple mice she may not easily go to one larger rat. If you were feeding live mice then you are changing two things for your snake...the food presentation and type of food and that may trigger the refusal. If you were feeding p/k mice then perhaps your BP just prefers mice, some are very prey specific that way. Perhaps trying a p/k fat rat pup which is in size about the same as the mice she is used to might help her transfer to rats a bit easier. Or if she's used to live mice, a live rat pup or a weanling rat or two (or three) might do the trick and then just move up gradually in rat size.


If she's a great mouse eater then why even change her?