Animals in Yellowstone National Park

We saw some animals in Yellowstone National Park.

We saw buffaloes eating grasses.

At hidden valley, we could see wolves.



Can you see four wolves walking along the stream?

But....
The most interesting animal is human beings.
Can you see tattoo on his arm?
Can you read it?
It looks like Japanese characters but there is no meanings.
We saw many tattoo using Japanese or Chinese characters.
As for us, it is strange.