At anthrocon,  marymouse was selling some "Certified (species)" badges like so. A friend needed a border collie reference, so we bought one. I thought it was really adorable, so, we developed a joke that once I wore it, I'd act more like a collie - energetic, happy, outgoing, etc. A hypnotic trigger, almost.

I thought it'd be cute to evolve it in this, showing that if Immy wears a bandana thusly, he'd turn into a happy, peppy collie.

Hopefully by now people are figuring out that I'm not just making a whole bunch of different "forms" or "fursonas", I just like transforming him into things.