When I look up "Concavenator Ark Additions," I see what i assume is the correct model, including feathers and spikes on the hump and whatnot, but every one that's spawned in my game so far is hairless and all bare looking. maybe i missed a change log and that's how they're supposed to be now.. not sure. Also, are they not supposed to 'swim' in the ground in all biomes? mine wont swim or do the dust attack in the grassland biome