I'm on PS5. Same issue. It will not allow me to uncheck "Walking" so the clothing will shows so I can remove the sweater from the dog I adopted. I say this, because for the regular Sims, if it's a type of clothing (say Hot Weather) and there is an item that I want to add or remove from the Sim that doesn't show, I can uncheck the particular category of clothing to find what I'm looking for. I assume if there was a walking and non-walking category for the pets, we'd be able to check and uncheck for the clothing options to show. Then we could add and remove certain items for the pets.
