Sibling Rivalry is the twelfth studio album by American rock band The Doobie Brothers. The album was released on October 3, 2000, by Pyramid Records and Rhino Entertainment. The album was the band's first studio recording since Brotherhood, in 1991. It was also the only Doobie Brothers studio album to feature a lead vocal by multi-instrumentalist John McFee and full lead vocals by drummer Keith Knudsen, both of whom had rejoined the group in 1993 after an eleven-year absence.