For "Toy Story 4," as for all Pixar films ... On the other hand, it's all warm fuzzies when we meet Ducky and Bunny, a pair of carnival-prize toys voiced by Keegan-Michael Key and Jordan Peele.

Compare that to this cat in "Toy Story 4." The difference is clear. But getting from that dog to this cat required a lot of innovation in between. Pixar forever changed animation in 1995 with "Toy ...