Figaro the cat from Pinocchio and later the Classic Disney Shorts was shown with a plantigrade stance, but the trope is averted in Mickey Mouse Clubhouse, where he is shown with the proper digitigrade stance.
Tigger and Piglet (he does not even have hooves) from the Winnie the Pooh films and TV series count as examples, even though they are supposed to be stuffed animals.
Eeyore does not have hooves and is digitigrade, unlike real donkeys, which have hooves and are unguligrade.
Bullseye the horse and Slinky the dog from the Toy Story franchise (also toys, like Tigger). Also, Hamm has feet that are just hooves.
Rare live-action example: Torgo from Manos: The Hands of Fate is supposed to be a Satyr, but his legs... well, let's just say they don't work like they're supposed to, in any sense of the word. The actor had designed prostheses to make it look like he had goat hooves, but he wore them backwards.
Everyone from Robin Hood (1973) except Sir Hiss due to him being a snake, which doesn't have feet, and arguably Little John, bears being one of the few plantigrade mammals outside the primate and rodent orders.
In Zootopia, animals who normally walk on their toes (such as carnivores and ungulates) are redesigned this way, so that their bipedal walk looks more natural.
Another live-action example: Godzilla is a plantigrade, despite dinosaurs being digitigrade. Justified in that he is mutated, and his pre-mutated form Godzillasaurus is a digitigrade.
Cartoony Foot Shape Examples:
Flower the skunk from Bambi has feet that look like human feet.
The Cheshire Cat from Alice in Wonderland has thumbs on his feet in one scene in the movie.
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