Idea for a new mob - Pan Popper

Hi Mojang,

My son has an idea for a new mob. It's called a pan popper, and it looks like a dog but with a flat (metallic) pan on it's back (like armor). Overall it is a peaceful mob that can befriend the player. This mob has 1000 hearts and can be tamed with zombie meat. The main body is rectangular in shape, standing on four rectangular legs, and a smaller square black tail. The tail (square part) is connected to the main body by a skinny white rectangle. The player can even ride on top of the pan popper with a saddle or bareback. The pan popper can hide in it's shell (the pan) if it's threatened. The pan popper can breathe under-water for a long time, and one has been known to kill a Warden. The player can direct it to mine blocks for the player. The pan popper can be found in many biomes across the overworld.

The spawn egg color is all red. It would have 3 hunger bars,