yes, they eat wild mice/rats in the wild, and have from the day that they were born.
*i might be talking out of my ass here* but it seems to me that they (the wild ones) probabaly have imunities to deseases that your captive bread snake might not... think of when the europeans came to america (the name we call it today)..
they brought deseases and stuff that theirimune system could handle, but it wiped out thousands that werent use to it.
spooky