The age between 8 and 16 weeks is a really crucial stage in a puppy's development. Don't set out to frighten your puppy, but let it see people, children, traffic, etc. Chewing All puppies will chew at various times, and so they must have a variety of safe toys to teethe on. Encourage them to chew their own things, and praise them for doing so. All my Beardies have a constant supply of sterilised bones, which are safe, clean, and help to occupy them as well as keeping the teeth clean.
Good toys are nylabones, raggers, and a rubber 'kong' which can be stuffed with treats.
You must not allow your puppy to bite your hands, ankles, etc. in play, as this can rapidly escalate into a real problem - especially if you have children. This should startle the puppy, and it will quickly recognise that this is not a fun thing for it to do. As soon as it approaches you again without mouthing, you can then praise it and make a fuss of it. Grooming Start gently to brush and comb your puppy straight away, even if the coat is really short to begin with. At the moment it is best to start when they are sleepy, and gently but firmly insist that they lie still and do not try to bite or grab your hand or the brush.