Because technology wasn't advanced enough, Pixar had to develop a new program called Fizt to automate
the
movement's of Sulley's fur.
Boo is voiced by one of the story artists' daughters.
“Monsters, Inc.” became the highest-grossing cartoon of all the animated films released before
it.
Ted (a huge monster with only his legs visible) was supposed to roar in response to Sally's greeting,
like
Godzilla. The filmmakers tried to negotiate with Toho to use Godzilla's roar, but Toho turned them down,
so
Ted responds with
a chicken cackle instead.