Dogs have evolved over many years and earned the title “man’s best friend”. Dogs have many uses, including as police dogs and they can detect bombs and drugs (etc.). Additionally, dogs can simply be there as pets. Dogs have many life stages, many benefits to humans, and have also evolved over thousands of years. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get the original essay Dogs have evolved over thousands of years, since their first appearance with humans over 30,000 years ago, and even today, dogs are constantly evolving. First of all, all dogs have the same ancestor, the gray wolf (PBS). All dogs from Newfoundland to Pug all have the same ancestor the canis familiaris (Nat Geo). Some dogs have been bred to look a certain way. An example would be the Saint-Bernois; Over a hundred years ago, the Saint Bernese was a dog bred for use at work. In the 1850s, people began breeding them for dog shows which included changing the shape of their skulls. Scientists still debate the origin of the dog, some say the Middle East and Europe, and others say East Asia. Few people know it, but the dog is the largest carnivore ever domesticated. There are also negative aspects about evolution. It appears that evolution has caused many health problems in dogs. There are many benefits to having a dog. For example, dogs can make humans healthier, happier, and safer (American Humane). First of all, dogs can make their owners happier. Dogs can make people happier because they are calming and familiar companions (American Humane). Dogs are natural conversation starters and this promotes social interaction (American Humane) and the more social interaction people have, the happier people can become. The next benefit of having a dog is that dogs can improve the health of their owners. Dog owners can simply improve their health by adapting to their dog's lifestyle (American Humane). Dog owners are also fifty-four percent more likely to do the recommended exercise than non-dog owners (American Humane). Dogs can also keep people safe. Studies have shown that barking dogs help deter burglaries and other violent attacks better (American Humane). With a keen sense of hearing and smell, dogs can detect things that humans cannot and can alert people to possible danger (American Humane). Additionally, a dog's natural instinct is often to protect their home and family. Dogs, like humans, go through many different stages in their lives. Dogs go through four different stages of their lives: puppy, adolescent, adult and senior (pets). The puppy stage begins after approximately 63 days of gestation (pets). At the puppy stage, the dog learns the correct way to interact with humans and with other animals sharing your home (pets). The next stage of life is that of adolescence. During this stage, hormones begin to act and if not spayed, the dog may begin to behave like a moody teenager (pets). Additionally, dogs will shed their puppy fur and grow to their full size. The next step