A fact not known by many, but in 2016, when Half-Life 2 Repo leaks occured, among others there was found strange looking model of a cat.
The model didn't have any textures or animations or even bones, only this "deformed" mesh. It's quite possible it was an internal joke by one of Valve's modelers, for example about that cat that was mentioned by Barney.
The model was never leaked in a public access and all we have is a couple of screenshots.
ive only seen this one screenshot float around, and as youve said theres a few others so im curious, do we get to see them? or are those screenshots of private access as well?
This is the only known screenshot of this model