Snoopy is Charlie Brown's pet beagle in the comic strip 'Peanuts' by Charles M. Schulz. He can also be found in all the 'Peanuts' movies and television specials, including 'The Peanuts Movie'. Since his debut in the United States on October 4, 1950, Snoopy has become one of the most recognizable and iconic characters in the comic strip.

The original drawings of Snoopy were inspired by Spike, one of Schulz's childhood dogs. Snoopy is a loyal, innocent, imaginative and good-natured beagle who is prone to imagining fantasy lives, including being an author, a college student known as 'Joe Cool', an attorney, and a British WW1 'flying ace' in the Royal Flying Corps.

The beagle is a small hound that is similar in appearance to the much larger foxhound. The beagle is a scent hound, developed primary for hunting hare. With a great sense of smell and superior tracking instinct, the beagle is employed as a detection dog for prohibited agricultural imports and food stuffs in quarantine around the world.

Described as intelligent but single-minded, the beagle is also a popular pet for families due to its size, good temper, and lack of inherited health problems.

More Info: en.wikipedia.org