For the given mount (and some others), example Duskwing Ohuna, mount id: 1671
We can get the creatue display 108751 which in return contains one asset “zoom”, but this asset you will get access denied for.
Another example, not access denied but questionable asset?
Mount Grotto Netherwing Drake, mount id: 1744
We get the creature display 112642, which in return is a blue/white 3d box?
Is the API not updated correctly or something else going on?