Pixar studios .
Shrek is not Pixar.
2007's Ratatouille was the next Disney-Pixar film after Cars.
Yes, it was a cooperative work from Disney and Pixar, after Pixar was bought out by Disney.
yes they are both diseny pixar movies
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Yes it is
"Cars"
Yes.
All of those are PIXAR movies except for Shrek. Shrek is a DreamWorks movie.
Yes. And distributed by Walt Disney Pictures.
Your story is not a Pixar movie. Did you mean Toy Story? Because then all of them are Pixar Movies