^^ I saw part of that. That was a bad gorilla suit.
In their defense, it wasn't supposed to be a real gorilla. It was supposed to be a madman in a stolen gorilla suit.
This was (possibly unintentional) bright idea: Rather than trying to pass off that crappy gorilla suit as as a real ape, they established early on that the killer was just what he appeared to be: a man in a crappy gorilla suit!
Still a pretty lousy movie, though.