Page "Rowlf the Dog" Paragraph 16

Rowlf appears in The Muppets, initially saddened he wasn't included in the montage depicting the principal Muppets being reunited ( Rowlf was asleep, and was simply woken up by Kermit and easily convinced to join the cause ), and helps rebuild the Muppet theater.

He also performs " Smells Like Teen Spirit " in a barbershop quartet with Sam the Eagle, Beaker, and Link Hogthrob during the Muppet Telethon, as well as an unwilling ( and captive ) Jack Black.