10 most popular Photo of the Days

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river otter photo

credit: Jaymi Heimbuch

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September's most loved images from our Photo of the Day series!

In 10th place is this image of a river otter pausing to say hello. North American river otters are very curious creatures and not much gets past their notice, especially photographers hunched in the reeds of their pond.

Click through to the next slide to see the rest of this month's favorite images.