Yellowstone National Park several times, Glacier National Park, Zion National Park, Mt. St. Helens, Mt. Rainier, Joshua Tree National Park, Grand Tetons National Park and the Grand Canyon to name just a few spots.
We've seen black bear, grizzly bear, osprey, eagles, deer, antelope, elk, mountain goats, big horn sheep, whales, sea lions, dolphins, gophers, prairie dogs, ground squirrel and yes, even the elusive moose. I'll let you search through the links above to see what you can spot. ;-)
BONUS: New Orleans & National D Day Museum