I live in Connecticut not too far from where that chimp attack has made national news. Not to be disrespectful to the victim or families involved i am just mentioning this for the brutal savagery of an adult chimpanzee. I realize more powerful PC's can handle a chimp no problem, but imagine 1st level PC's getting attacked and mauled by an adult chimp even without the savage template. And what about the Olangru threads on here, a psycho-demon chimp that CAN take care of more powerful characters. I would have a savage chimp attack in the "There is no Honor" maybe where the PC's find the Rhagodessa. Possibly a couple large ticked off chimps that have escaped their pen. just a thought really intimidate your players with the primates right from the beginning.
DAve
In The Bullywug's Gambit there is an attack with savage monkeys jumping out of a tree. It really spooked my PCs.