Zoo season finale.....

ok so I watched this show all summer and liked it... not real believable but whatever, then last night it just got weird... I expected a cliffhanger at the end leading into next season but the wall of animals ready to attack was just stupid. Also Oz having the dog bite leads me to believe he's going to do some stupid mutation like the criminal dude and then I'm going to have to turn it off.

Any opinions?