Sandshrew

[PokePoindexter]

This was the one I remember making:

To avoid predators, SANDSHREW curls itself up to look like a small boulder. When intimidated, it burrows deep into the ground to escape its attacker.

SANDSHREW's rock hard skin protects it from most attacks. It is also known to smash into its enemies protected by its skin.

SANDSHREW's rock hard skin is not only a great defense, but can also be used for offense. Its back has tiny spines that feel like sandpaper and can hurt quite a bit.

To compensate for it's slow walking speed, SANDSHREW curls itself into a ball and rolls from location to location. It often gains enough speed to crash through the walls of houses.

I know there were others, but I can't remember them. Sorry.