In 1357 DR, Tanaroo went with Doctor Trundles and his circus to the Damaran city of Valls. However, a bulette freed itself and other monsters. Tanaroo hired some adventurers to capture the monsters before they killed someone.
In 1359 DR, after capturing new monsters, Trundles went back for a new tour in Impiltur. Tanaroo acted as ringmaster with Trundles staying behind the scenes.