When I received my 2 bloods I left them alone for the first week. After they had ate, and were given a few days to digest I slowly started to handle them. First for short periods of time. 5-10 minutes a piece. I've had them for a few weeks now and handle them almost every day. It is still for short periods of time, but it is getting longer. Usually 20 minutes a piece. I for one don't want an aggressive blood....