Someone else posted a month or three ago that they were seeing the bst donor pet as human, but I'm unsure what the cause was/if it was fixed. Personally, I've always seen that pet's "custom" model perfectly well.
As for gargoyles in ldon, I'm stuck seeing them as human as well

Can't seem to figure out what the exact zone files they are (there are multiples of the MM ldon mission, and the gargs in all of them are human, so would need to find them all), and then there's the arduous task of actually finding legitimate working versions of those zone files (I no longer have a copy of titanium, I'm using underfoot.) I gave up on that venture a while ago, as it's only a mild annoyance that applies only to when I sweep through hard ldons, which I don't do that much anymore (no longer need ldon points, and the plat is better in the easy ldons)