Toys your pet has already played no longer sit in the way as grayed-out cards you can't pick, so the list is shorter and goes straight to what's left. The Toys Played tab still lists everything your pet has played.
It's a new feature.
Does this also work for toys we play with from our inventory? I mean, I would not want to waste a toy on one pet when they have already played with it when they still show up under pets to play with from items in inventory.
I never knew there was a list of toys they played with..