Before buying a dog, many people picture an idyllic scene of children playing happily with their new pet, learning to care for them and enjoying the benefits of outdoor exercise.

But children and dogs can be a difficult mix. In 2005-06, almost 900 children aged nine or under were admitted to hospital after injuries caused by dogs.

It's enough to have prompted doctors to recommend that children shouldn't be left alone with dogs.

As well as supervising your children when they're with a dog, you should teach them to:

Stroke the dog gently on the head or chest without 'hugging' it around the neck
Avoid staring straight into the dog's eyes because it may think this is threatening behaviour
Avoid running and screaming around the dog
Leave the dog alone when it's eating or sleeping
Treat the dog with kindness and respect

To minimise the risk of aggressive behaviour by your dog:

Do some research before you buy and find out which breeds behave
best with children
Buy from a reputable breeder
Take your dog to a formal training class and teach it to behave well around children
Make sure your dog has a 'retreat', such as a bed
Avoid giving your dog toys that resemble children's clothes or playthings
Don't allow your dog to play rough games with adults that wouldn't be safe with children

If you already have a dog and are expecting your first baby, you should take precautions to make sure jealousy doesn't provoke aggression:

Change the dog's routine ahead of the baby's arrival so it becomes used to its new regime - it may have to cope with fewer daily walks for the first few weeks, for example
Encourage the dog not to go upstairs if that's where your baby will be sleeping
Test your dog's reaction if you lavish attention on a doll wrapped in a blanket

If your child is bitten clean the wound with running water as soon as possible for ten minutes to reduce the chance of infection Cover it with a non-stick sterile dressing
Stop bleeding by pressing firmly on bite while holding it in the air, if possible

If there's a lot of bleeding or the wound is large, deep or dirty, see a doctor or nurse.

Animal bites abroad are potentially more serious because of the risk of rabies in some countries. Seek medical attention as soon as possible.