I wouldnt worry about the not jumping thing, Rommel wouldnt jump into my car without help until he was about 7 months old, and he wouldnt jump on my bed until he was about 9 months old! Really I would rather have him not jumping....that way he isnt hurting himself.
As for the growling in the car...Rommel does the same thing. He doesnt even like people walking past the car. I personally don't correct him for it, I think it's kind of up to you, whether it is acceptable or not. For me...it is, It doesnt bother me. It annoys alot of people though.
I think it is a good idea to have your husband talk to your neighbor. Hopefully it was an accident that it wound up in your backyard, if he was on the roof and flicked it and it caught the wind, it could have wound up there. But if it happens alot, I would for sure say something.
As for the growling in the car...Rommel does the same thing. He doesnt even like people walking past the car. I personally don't correct him for it, I think it's kind of up to you, whether it is acceptable or not. For me...it is, It doesnt bother me. It annoys alot of people though.
I think it is a good idea to have your husband talk to your neighbor. Hopefully it was an accident that it wound up in your backyard, if he was on the roof and flicked it and it caught the wind, it could have wound up there. But if it happens alot, I would for sure say something.