not wishing to ruin anything - but...
[geek on] I seem to remember that the Rancor came from a crashed ship [geek off]
was in Tales of the Bounty Hunters or something... although if it was from Tales of the Bounty Hunters, that was also the book that had Boba Fett escape the Sarlac and become Dengar's best man... or something... forget I said anything... terrible book....