I remember watch boomerang all day time ago, once i saw a show about cats in 3D, one of them had his head smaller than his body. I think by the animation it was made in brazil or any european country, i don't remember the title, it is a really blurry memory.
One of the episodes apeared the cat with the small head triyng to be adopted, however by his look, the humans consideer him a mounstrosity, and he tries everything to be adopted.
I hope i'll find anything about that serie, maybe there should be some information somewhere on internet
P.D: I saw that show on Boomerang in Chile, and there is a chance that before was aired in Cartoon Network (by the fact in that times boomerang used to re-aired some unsuccesful programs in cartoon network)