My name is Chase!

2 years ago my nephew pasted away and I got custody of his son at birth. Chase was 8yrs old at the time and tolerated it okay, some jealous. Now 2yrs late he has lightly bite the baby. Chase is a good dog, he is very attracted to me so this will be a big transition. He doesn't need to be around kids that try to touch him. He barks a lot and will Chase a bike or motorcycle if let outside.. so prefer fenced in yard. He acts mean when someone comes over but if they will stop and give him a minute to smell them he is fine. I've had Chase since birth so this is very hard for me but can't have him biting the baby for touching him or taking his treat... help... there is no fee to a good person