When entrepreneurs used his invention to play music, Edison thought it was a debasement of his idea. Our widespread misunderstanding of inventors as setting out to solve society's problems causes us to say that necessity is the mother of invention. Actually, invention is the mother of necessity, by creating needs that we never felt before. (Be honest: did you really feel a need for your Walkman CD player long before it existed?) Far from welcoming solutions to our supposed needs, society's entrenched interests commonly resist inventions.
Medium-size dogs are at the midway point between tiny and massive canines, and both height and weight factor into the classification. Medium-size dogs generally weigh in the ballpark of 35 to 65 pounds, according to Kim Williamson of Animal Planet.. In terms of height, medium-size dogs are usually from 1 to 2 feet tall, measured from the ground to the withers or shoulder.
According to the Pet Care website, a small dog of about 10 pounds needs about 450 calories, a medium-sized dog of 45 to 70 pounds needs roughly 1200 calories, and a large dog over 85 pounds needs 1800.Very large dogs---canines that weigh in at over 130 pounds---require about 2400 calories a day.ccording to the Pet Care website, a small dog of about 10 pounds needs about 450 calories, a medium-sized dog of 45 to 70 pounds needs roughly 1200 calories, and a large dog over 85 pounds needs 1800.