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.
Medium crates are approximately 36 inches and are meant for dogs that weigh 41 to 70 pounds. Large crates measure about 42 inches and are for dogs that weigh 71 to 90 pounds. Extra-large kennels measure 48 inches and are designed for dogs that weigh 91 to 110 pounds.A giant kennel may be about 54 inches; it's for use for dogs that weigh over 110 pounds. You'll find a list of recommended sizes for each breed in the Resources section of this article.edium crates are approximately 36 inches and are meant for dogs that weigh 41 to 70 pounds. Large crates measure about 42 inches and are for dogs that weigh 71 to 90 pounds. Extra-large kennels measure 48 inches and are designed for dogs that weigh 91 to 110 pounds.