How much your dog should weigh depends on several factors, for example breed, sex, height and general stature. It is often incorrect to look at the breed average and think this weight is correct for your dog.
The correct weight for your dog, is what they weigh when they have a perfect body condition score. A dog at perfect body condition score should have ribs that are EASILY felt (ahem, Cadbury), the lumbar waist should be visible, there should be clear muscle definition, thin fat cover and an abdominal tuck. And if you find that your dog is a bit heavy, please follow our advice for overweight pets.