The dogs have well-developed muscles. The average weight of small dogs in adulthood is around 8-10 kilograms. When three months old, a dog weighing 2-5 kilograms should be considered a small dog. In addition to weight, we can also judge whether a dog is a small dog based on its height and the size of its paws. When young, small dogs are very short and their paws are about the size of two flat fingers. Some of the small dogs that love to eat will Grow bigger.