RatDog is an American rock band formed in 1995 by Bob Weir, a founding member of the iconic band Grateful Dead. The group is known for its blend of rock, blues, and improvisational music, often featuring extended jams and a diverse setlist. The band has undergone various lineup changes over the years, but it typically includes talented musicians who contribute to its unique sound. RatDog has gained a loyal following, performing at festivals and venues across the United States, and continues to celebrate the spirit of improvisation and collaboration in live music.