hi my names tom from the uk in essex im a 1st time dog owner and to be fair after getting my doberman i wouldnt change him for the world and glad i picked this bread, ive got a brown and liver doberman called him rolo (after the chocolate) , had him since 6 weeks hes 14 weeks now goes so quick lol , hes had all his jabs , and hes sort of there now toilet trained , ive taught him to sit , lay down , paw , up , down , off , hes so smart and doesnt take him to long to figure out a new trick or command , theres a couple things id like help with hense why i signed up on here , 1) ive been taking him out on walks for couple weeks now so hes used to lead and colar now , but he likes to try jump around and try chew his lead which i dont know how to make him stop that , 2) when i take him out on walks most of the time hes fine but with certain people he's not unsure of he will put his head down and freeze until theve walked past him i dont know how to stop this ive tried distracting his attention , 3) is the worst of all is his biting he nips and nips most of the time on my hands its really starting to hurt as his teeth are growing , ive tried everything , 4) and this is strange with him if im sitting in my chair watching him play with his toys and if i cross my legs he looks at my foot and starts growling and jumping around my foot barking at it ? i just find it strange and he wont stop until i uncross my legs lol please someone with experience help as i am a 1st time dog owner so everythings a learning curve for me at the moment