It is not difficult to find.

Whenever you go to a University, you can find it easily.

It’s shorter than I.

It looks like rectangular.

It’s too difficult to draw a line between face and body.

It looks like a penguin.

The color is usually gray, but the lowest part has darker color than gray.

(Actually, I’m not sure its color. )

They have different nameplates.

One has been written ’bottle, can and etc..’ and another has been written ‘recycling’.

The nameplate is always attached its chest.

The mouth is square-shaped.

It has a foot on its one side, but It’s not problem.

It just stands on the same place all the time.

Hint: If I step on it, it opens its mouth.

          I can throw useless things away into this.