Which studio produced 'Shrek' (2001)?

Who voiced Shrek? Who voiced Mufasa in the 1994 animated 'The Lion King'? Who provided the voice of Darth Vader in the original 'Star Wars' trilogy? Which studio produced 'Toy Story', the first fully computer-animated feature film? Which film was the first to win the Academy Award for Best Animated Feature? Which Studio Ghibli film won the Academy Award for Best Animated Feature in 2003? Who directed 'Spirited Away'? Which Pixar film features a rat who wants to be a chef?