The Bear Trap is a useful weapon in naughty bear. If you wait you could catch bears. But be careful you can also catch yourself or the bears can free each other. After you caught a goodie or yourself you can redeploy it to catch yourself or more bears again!
Scare Option: Knock the bear over and scare them. This frees them from the trap, but leaves them injured and frightened. (if you wish to scare them again to drive them insane you must trap them again.)
Kill Option: Approach the bear from behind and break its neck while it tries to stop you.