Today I took a ride on the bear watching bus.

Two butts visible at the end of the bus.

I'm walking while making my body tremble.

The leading bear on the right has a rounded tail.

The tail of the chasing bear on the left is ▽.

Here's a maniac problem!

Can you tell which bear it is just by looking at its butt (back view)? ?

If you understand this, you are quite a Bear Mountain enthusiast☆