I've been playing a lot of Hades lately, and big squishy fluffy Cerberus reminded me of the old 1970s viral cat poster, and, well... I did this.
I in no way represent Supergiant Games, but let me say... their 3D artist, Paige Carter, must have had a world of difficulty convincingly attaching three heads to the same collar. Props to her for that. I was thinking about it for a while, ultimately going with three instanced (and eventually realized and adjusted) heads branching down into the rib cage. I have no idea how she did it, or how it would actually work. That's what I get for reading all these anatomy books...