Medium sized dogs include dogs weighing 21 to 55 pounds at adulthood. Historically, medium sized dogs were bred for their energy and their physical ability to work outdoors. Because of their morphology, medium breed dogs can perform brief intense efforts while also being fast runners. Their courageous, enterprising nature and a very well-developed sense of smell make them much appreciated performance dogs.
Today, medium sized dogs have adapted to a wide variety of lifestyles - from working farm dogs to household pets. Regardless of where they live, it is essential for medium breed dogs to get frequent exercise so that they can expend energy. Medium sized dogs put great stress on their bodies when taking outdoor exercise. Their natural defences can be put under heavy strain by injuries, physical stress and adverse weather conditions.
During growth, a medium sized puppy increases its birthweight by 40 to 50 times. During this period, it needs a high intake of energy and nutrients as well as balanced amounts of calcium and phosphorus for good bone mineralization and harmonious growth to occur.
During this time of growth, the dog's digestive system is quite sensitive. A medium breed dog needs a highly digestible food to ensure a balanced intestinal flora and a regular intestinal transit. Their life expectancy is 10 - 12 years.
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