I have 2 labrador retreivers. The youngest one I am having a problem with and wonder if/how it is resolvable. He is very lovable, but has a tendency to bite strangers who come in the yard, or if they get too close to the car or to us when we're out for walks. Other than that, he is very lovable, and I love him very much. But I fear this has become a big problem. I'm wondering if maybe it's because he's alone too much during the day, and maybe because he's always with his mother dog. I would like to socialize him more, and have decided that once a day I will take him out for a walk without his mother. It has me scared though because he's a bit unpredictable. I am wondering if I should find a new owner for him who has a fenced yard (I'm using a radio fence, which means anyone can walk into my yard). Or if I should keep him and keep trying. Or, if he should be put to sleep because this is a bad trait (this would be very hard for me to do. I don't think I could do it). Any ideas?