Ooh what could it be?
Watch Pixar's new Toy Story short
Partysaurus Rex sees Rex the Dinosaur having a party in the bathtub!
This is the third installment of shorts by Pixar that star characters from their hugely popular Toy Story films.
The animation company has previously released Hawaiian Vacation and Small Fry.
Partysaurus Rex has been already shown in American cinemas just before the screening of Finding Nemo 3D, another Pixar classic.
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