a lab will hunt and try to kill almost anything with very little encouragement. they have a strong hunting drive. but most will tree and stay treed as long as any treeing hound one thing they won't do is bark treed. so you have a hard time locating them. my big yellow lab hunts anything and has killed many cats,possums,coons as well as snakes, mice and whatever else is furry and moves. but a good tree hound hes not. i've found him missing before all night and upon looking around there he was setting under a tree staring at a coon or cat not making a sound.