Retics and Burms can either be people-loving and docile or mean as hell. Rock Pythons and Yellow Anacondas are usually mean, Green Anacondas are hit-or-miss, depending on the personality of the individual Snake. That leaves Boa Constrictors. Most of the ones I have seen were pretty docile, even when not handled. But of course there are the individuals that hate people... it all depends.
