My brother took his family to Yellowstone last summer. Hearing about his trip has really made me want to go myself. It would be cool to see all these animals on the sign and I think that it is great that they let people know what all can be seen so that people can keep an eye out for them.http://www.cardinalsign.com/
I have been to Yellowstone National Park so many times since I was a little kid, and I always see signs like this. There was one day when we saw about 200 buffalo crossing the street at the same time. It was so amazing, but I'm really glad that they have signs to warn people of the possible driving hazards.http://www.mobilesignrental.ca/brampton.html
