Labeagle
A dog that looks like it got tossed in a trash can with a lab and a beagle. Smart as hell but can't tell a friendly face from a robber. They'll run 5 miles to chase a rabbit and come back to bite you because you forgot to feed them.
My Labeagle ran off for 4 hours to chase a squirrel. Came back with a dead squirrel and a broken collar.
I tried to use it as a watch dog. It greeted the thief like an old friend.
It took me 30 minutes to convince it to stop wrestling my kid and come home.