Cazadors, there like africanised bees... I can never seem to aggro just one, their super fast, and its almost impossible to get the jump on one because there always moving. Even the baby one's can kill me in three or four hits. I wish I had a giant flyswatter of atomic proportions to deal with these things. I'd rather be stuck in a room of deathclaw's then wander into a pack of them in the Mojave.