Man’s Best Friend
Household items are not the only thing to have undergone a major change in the last century. Man’s best friend have been an integral part of human life for thousands of years. Dogs are protectors, hunters, and well- just about the best companions around.

Breeding has had a big impact on canines as humans have sought to alter their temperaments and abilities. This has been both good and bad. For the German Shepherd, for example, this has resulted in leg and hip problems. While it may have once been more in fashion to have a purebred dog, today it is popular to adopt and rescue a dog from an animal shelter.