Roly-Poly Bowl / Pet bowl

This bowl is made for pets, and it is a bowl with the principle of tumbler.
So it is also a roly-poly toy. it is known by those who have keeped a pet,
pets always overthrow their food bowls. And if the food is little, they
cann`t eat the food in the bottom of the bowl.

So this roly-poly bowl is designed for this. The internal part of the bowl
is not symmetrical, so the cneter of gravity is not is the cneter As food in
the bowl decreasing, the bowl will be slant, and pets can eat the rest food
easily!