We adopted our first dog 12 days ago. He is a bichon frise, possibly a cross but it's hard to tell. He is 1, don't know his exact age as he was a stray. On about day 3 he started barking at other dogs and on day 8 he started barking at and trying to chase cars out of the blue. We have three children so walks have become very difficult. He is also nipping alot but from what I read, this is very common. As he didn't display these behaviours until after we got him, I doubt he would have been rehomed to us if he had. I've spoken to someone from the shelter and their dog trainer is going to call me back. He is really friendly to anyone who comes in to the house so far and he loves cuddles on the sofa. Can these things be fixed or are we going to have to deal with it long term? Thanks