What is the name of the cartoon with a white dog? - briefly
The cartoon you're referring to is likely "Lady and the Tramp." It features a white dog named Lady as one of its main characters.
What is the name of the cartoon with a white dog? - in detail
The animated series you are referring to is likely "Scooby-Doo." Created by Hanna-Barbera Productions, this iconic show first aired in 1969 and has since become a staple of children's television. The titular character, Scooby-Doo, is indeed a white dog with black spots, known for his cowardly nature but also for his loyalty to his friends—Shaggy, Fred, Daphne, and Velma. Together, they solve mysteries while traveling in their van, the Mystery Machine. "Scooby-Doo" has since spawned numerous spin-offs, movies, and specials, ensuring its enduring popularity among fans of all ages.