Photo: Open wide and say 'ahhh'

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Our photo of the day comes from Calgary, Canada.

Today we are treated to something most of us have likely never seen before – an intimate look at the mouth of a Richardson’s ground squirrel. Look at those teeth; no wonder squirrels are such experts at cracking nuts. Thank you to photographer Tony LePrieur for such a charming and impeccably timed shot.

Would you like to see your nature photo featured as the TreeHugger photo of the day? Join TreeHugger’s Reader Photo Pool on Flickr and add your pictures to the group. Alternatively, send it to with "photo of the day" in the subject line.

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