The coolest thing I've seen today. Now I want to draw up stats for it.
Cat and mouse armor.
In fact, here are the stats:
Tournament Cat Half-plate (MW):
Max DEX: 1
Skill Penalty: (-6)
Weight: 12.5 lbs.
Cost: 300 gp
Now you're thinking, "12 lbs? That's as much as the cat weighs!" But consider, this is a MM cat. It has 1/2 D8 hit points, which is as much as an ordinary human being. You tell me that's a 12 lb cat! No, we're talking about a Maine Coon here.
The cat gives up 1 AC, due to the heavy armor, but still ends up with an AC of 20. I assume it loses its Bite attack, thanks to the closed helm, but it can still Jump with a skill of 4.
(Note I used Ye Olde Shoppe's formula, which ignores the double-price penalty for non-humanoid creatures - that was only there to punish people who tried to actually role-play knights - and scales the price according to the weight.)