The fictional cat that first appeared in "Action Comics" #261 belongs to what team of pets?
Legion of Super-Pets: The Legion of Super-Pets is a fictional team of super-powered pets in the pre-Crisis DC Universe. Legion of Super-Pets:  Members include Krypto the Super-Dog and Streaky the Supercat. Streaky the Supercat:  Streaky first appeared in "Action Comics" #261 (February 1960) and was created by Jerry Siegel and Jim Mooney.
The Legion of Super-Pets