There's an excellent little snippet in the New York Times today about how global warming is affecting marmots in the Rocky Mountains.
The warmer weather makes it more difficult for the marmots to shed their Christmas and Thanksgiving weight gain, and marmots now are 3/4 of a pound more on average than they were when the study started back in 1962. (Side note: How do I get an awesome job like that, weighing and observing marmots in the Rocky Mountains?)
Also, the size of the marmot population has exploded recently. Apparently the combination of fatter marmots (I love fat marmots!) and shorter winters has led to a tripling of the population in this area in just the last decade.
I would also like to recommend, while I still have your waning attention, that you visit the marmot entry on Wikipedia. That profile picture just cracks me up.