Shared with you
Originally, Slinky Dog was intended to be one of Andy's more unpopular toys and the least played with, with Woody effectively being the only reason Slinky was not hauled off to goodwill, with Woody pointing this out when demanding that Slinky force the other toys off the bed after throwing Buzz out of the window. This backstory, however, was cut out after the scene in question nearly resulted in Toy Story being shut down on Black Friday
Sid Phillips is said to be inspired by a former Pixar employee of the same last name who was known to disassemble toys and use the parts to build bizarre creations.
This was the first animated film in Oscar history to be nominated for a Best Original Screenplay Academy Award.
When Woody is sitting on the bed talking with Slinky, there is a drawing of him on the wall behind them. This is actually an early sketch of the Woody character.
Billy Crystal was originally offered the chance to voice Buzz Lightyear, but declined. After seeing the finished film, he said the decision was the biggest mistake of his career. Upon learning this, John Lasseter telephoned Billy's house to offer him the role of Mike Wazowski in Monsters, Inc. (2001). Billy's wife answered the telephone and said "John Lasseter wants to speak to you". Billy took the telephone from his wife and said "Yes".
The animation team perfected the movement of the toy soldiers by nailing a pair of sneakers to a sheet of wood and trying to walk around with them on.