So I find out several days after the sweet cat and mouse armor that pet armor has actually been around for quite some time. Exhibit A: Samurai dog armor, circa 1800. It likely belonged to a high-ranking samurai and includes such quality materials as "chanfron armor, doeskin leather, silk brocade, a hand-carved wooden mask and gold leaf." I will admit it looks pretty good, but let's get real -- a dog would look foolish in this outfit. But cats are a completely different story. It's like in the book of Genesis when God is making everything.
On the sixth day God created animals and he said, "Let the land produce living creatures according to their kinds: livestock, creatures that move along the ground, and cats. You heard me, cats. And I want them to have some sweet freaking armor. Oh yeah, now I'm talking. Battle cats baby!" And God saw that it was good. Especially the armored cats. He loved them the most.
See, straight from the Bible people, you can't argue with that.