A herding dog, also known as a stock dog or working dog, is a type of pastoral dog that either has been trained in herding or belongs to breeds developed for herding. Their ability to be trained to act on the sound of a whistle or word of command is renowned throughout the world.

In Australia, New Zealand and the United States herding dogs are known as working dogs irrespective of their breeding. Some herding breeds work well with any kind of animals; others have been bred for generations to work with specific kinds of animals and have developed physical characteristics or styles of working that enhance their ability to handle these animals. Commonly mustered animals include cattle, sheep, goats and reindeer, although it is not unusual for poultry to be handled by dogs.

The term "herding dog" is sometimes erroneously used to describe livestock guardian dogs, whose primary function is to guard flocks and herds from predation and theft, and they lack the herding instinct. Although herding dogs may guard flocks their primary purpose is to move them; both herding dogs and livestock guardian dogs may be called "sheep dogs".

David Lee Roth (born October 10, 1954) is an American rock vocalist, songwriter, actor, author, and former radio personality. Roth is one of few vocalists with a larger than 4 octave range in full voice (from G1 to G♯5).

Roth is best known as the original and current lead singer of the Southern California-based hard rock outfit Van Halen. After departing Van Halen in 1985 Roth first enjoyed a successful career as a solo artist, which originated while still a member of that band and yielded several RIAA-certified Gold and Platinum records. After more than two decades apart, Roth rejoined Van Halen in 2006 for a North American tour that became the most successful in the band's history and one of the highest grossing of that year. Roth has remained the lead singer of Van Halen since his 2006 return and has recently completed recording new material with the band for their first album together since 1984.

Roth was born on October 10, 1954, in Bloomington, Indiana. He is the son of ophthalmologist Nathan Roth and Sibyl Roth and the brother of Allison and Lisa Roth. Dr. Nathan Roth was a renowned eye surgeon, who made millions via his practice and in real estate. Dr. Roth was even featured on the TV show, "Lifestyles of the Rich and Famous", in 1984. On that program, Dr. Roth claims that he was Van Halen's first manager helping the group obtain gigs in the early days. Nathan owned a 14,000-square-foot home in Pasadena named "Rothwood" and a chateau named "Bradbury". He was a writer, an actor, and a surgeon.