Dogs are loyal and intelligent companions, known for their strong bond with humans. They were the first domesticated animals, with a history stretching back over 15,000 years. Dogs have an exceptional sense of smell, far superior to humans, which makes them excellent at tasks like tracking and detecting substances. They come in a wide variety of breeds, each with unique traits and abilities tailored for specific tasks, from herding to hunting. Additionally, dogs are highly trainable and can perform a range of jobs, including service work for individuals with disabilities, search and rescue, and even therapy.