Panda bear

The Pandas first appear in Super Happy Crazy Fun Time Japan. They are used in the pinball challenge. They also star in the Cartoon Network online game, Total Pandamonium along with a few other animals.

Super Happy Crazy Fun Time Japan
In this episode, two pandas, named Tsing-Tsing and Ting-Ting were used in the first challenge. Tsing-Tsing had a rough time with DJ, while Ting-Ting fell for Alejandro's charms and helped him win the pinball challenge. At the end of the challenge, DJ ended up injuring Tsing-Tsing. Ting-Ting was alright, however. At the end of the episode, Tsing-Tsing is seen in the confessional, stamping DJ's passport, meaning to vote him off. Alejandro's panda, Ting-Ting, is most likely a male as Alejandro called him "handsome."

Aftermath: Bridgette Over Troubled Water
In an unaired clip played in Geoff's segment "That's Gonna Leave A Mark", a panda (Tsing-Tsing) jumps out of the confessional stall and repeatedly stamps DJ's face.

Aftermath: Revenge of the Telethon
In a segment called DJ's World Of Animals, it is seen in one of the cages to donate money for refueling the plane, Blaineley sets free the animals which attacks everyone in the studio. When it is released, the panda attacks Katie.

Planes, Trains, Hot Air Mobiles
The panda is seen in a cage being carried by interns into a truck in Alberta. Alejandro sees this and starts to follow the truck. It is then later seen in the truck along with many other caged animals and Alejandro

Trivia

 * Tsing-Tsing was a part of DJ's running gag of hurting animals. The first one was a mummified dog. The second one he hurt was a bird. Tsing-Tsing was the third animal he hurt.
 * Tsing-Tsing is the fourth animal to use the confessional. The first being the Loon, the second being the Bear and the third being Sasquatchanakwa.
 * That is, if you count Sasquatchanakwa as an animal.
 * Tsing-Tsing is the second animal to vote someone off, in this case DJ. (In Haute Camp-ture, a parrot voted LeShawna off twice.)
 * The panda is actually native to China, not Japan, and therefore must have been brought there by the producers.
 * They are the first animals to vote someone off, in this case DJ, its unknown in Chris counted the voted, but this may be unlikely due to it being an animal and not a contestant.