Stamping out agressive behaviour
Don't let your cute puppy turn into an aggressive dog

A lot of people think dogs bite "because that's what they
do". But dogs don't become aggressive without good reason, and
most dogs express aggression because they find themselves in a
stressful situation. So it stands to reason that the best way
to prevent your puppy from becoming an angry or aggressive dog
later is to help him to avoid or tolerate stressful situations.
You should learn to recognise signs of fear such as being
backed into a corner, or being restricted by his lead.
Fear is the common factor
To become afraid, dogs don't necessarily need to have had a
nasty experience. Dogs that are fear-stricken are those that
don't get the opportunity to socialise with enough people. So
socialisation is very important - for advice on
socialisation click here. If your puppy is brought up to
see people (grown-ups and children alike) as providers of fun,
praise and treats, they won't need to display threatening
behaviour.
You should also expose your puppy to noises and situations
that might frighten them from a young age, to help them
overcome their fears. Then potentially scary things, like the
vacuum cleaner, traffic or the postman, become everyday
occurrences they take in their stride.
Your puppy and other people
All people are different, whether they're friends, family or
strangers - and in the eyes of a puppy, the different ages,
shapes and sizes we humans come in can be mightily confusing.
So make sure he encounters as many people as possible from an
early age. That way, strangers will seem less strange and he'll
soon learn to become calmer and more trusting. Just make sure
all these new friends don't overwhelm him with vigorous
displays of affection.
It's also important that your puppy becomes acquainted with
children. Few youngsters can resist fussing over a puppy and
although they mean no harm, this can be alarming for the dog.
It's a good idea to take your puppy for a walk near the local
school; children will need no encouragement to come up and say
hello. But don't forget that puppies can become tired quickly,
so make sure any meeting times are kept quite short and give
your puppy time to rest.
Play-biting shouldn't get out of hand
Before you collected your new puppy, he was used to playing
with his own brothers and sisters. And play-biting is a puppy's
natural game. So once he's settled into his new home, he'll
want to play-bite with you. But to curb excessive biting,
you'll need to divert his attention away from your hands to his
toys.
The chances are, whenever you spend time with your puppy,
stroking and making a fuss of him, he'll want to chew on your
hand, so make sure you have one of his toys ready. Make it hard
for him to bite your hand by making a fist and offer a toy
instead, waving and wiggling it around him. It won't be long
before he learns that toys are lot more fun to play with and
chew than a big fist.
Your puppy only knows what you teach him
It's important to remember that whatever you teach your
puppy now will be normal behaviour for your grown dog. So when
he's playing as a puppy, try thinking of him as a mature dog,
and judge whether his behaviour is acceptable or otherwise. If
he starts growling, or attempting to bite a hand holding a toy,
or rushing a young child during play, stop the game at once and
walk away with the toy. He'll soon learn why the fun stopped
and avoid the behaviour that caused it.
If you have any concerns about your puppy's behaviour, or
would like more information about available books, training
courses or classes, your vet will be pleased to advise you.