Ok well any snake will strike if your sticking your hand in the cage after feeding. They are in feeding mode and anything they may think is food they will strike at. Also make sure after you handle any mice rats ect you wash your hands . They can smell it on you and may bite. He also just may not be used to the new home and people. Give him some time if needed handle him with gloves first until he gets used to you. I have also seen snakes that just don't like certain people. We got a redtail and the guy that gave him to us said he couldn't be handled he bites he strikes at the glass. Well we get him and have never had a problem. So he may just not like you as bad as that seems. Well good luck to you!