Does the subject want to ask, "Why is the gap between the toes of the puppy big?" The big toe gap of puppies is the result of long-term lack of exercise. Long-term lack of exercise in dogs will lead to long toenails and easy cracking. Cracking will lead to a large gap in the toes. Owners need to take their dogs for outdoor sports regularly to increase the amount of exercise. Dogs are common canine mammals, close relatives of wolves, and are called "the most loyal friends of mankind" by some people. It is also the pet with the highest feeding rate. Its life span is about ten years. If there are no accidents, the average life expectancy is longer than that of small dogs. Dogs are distributed all over the world. Dogs like to eat meat, dog food and human meals, fruits, snacks and so on. Dogs don't sweat, but release heat from their bodies by opening their mouths and sticking out their tongues. Well-proportioned, long snout, oval eyes, vertical or vertical ears, vigorous limbs, 5 toes on the forelimbs and 4 toes on the hind limbs, with claws, but the claws can not be extended and contracted, and the tail is ring-shaped or sickle-shaped.