Washington State is home to some quality mammals and spectacular scenery. I visited in February 2009 for the first time and had a couple of days to look around. February is not a good time to find mammals and it was even worse than expected after a late snow storm dumped 8" on the Olympic Peninsula. But it didn't stop me trying...
I've been to Wyoming three times. In July 1993 I spent a couple of nights in Yellowstone and a third at Grand Teton National Park. Both excellent national parks (though Yellowstone is very busy in the summer) with some fine mammals from the suite of Arctic species.I returned to Yellowstone in April 2010 with my kids for 24 hours and focused on the north of the park. In August 2014 I was back in Wyoming for a night to look for Pygmy Rabbits at Fossil Butte National Monument.