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10 of the World’s Tiniest Mammals (Slideshow)

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9. Least Weasel (Mustela nivalis)

The least weasel is the world’s smallest carnivore, occurring throughout Eurasia, North America and North Africa. They can weigh as little as 1.04 ounces (29.5 grams) or as much as 8.8 ounces (250 grams). Their size is also very variable, but they can be as small as 5 inches (131 millimeters) long, including the tail! Don’t let that fool you—despite their petite size, they are formidable and fierce hunters.

Photo Credit: Keven Law from Los Angeles, USA (On the lookout…) [CC-BY-SA-2.0], via Wikimedia Commons

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Molly Allison-Baker

Molly is a nature and travel enthusiast who is passionate about endangered languages, natural history, and women's and LGBT issues. In her free time, she enjoys rock climbing, reading, and hanging out with her three cats.


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8:57AM PDT on Jun 19, 2014

They are all so cute!

1:38PM PDT on May 28, 2014

Thank you for sharing! I had never seen any of them. They are so cute and look so fragile at the same time.

9:08AM PDT on May 28, 2014

New stuff I never put together in ma po lil brain before! You never stop learning!

6:49PM PDT on May 27, 2014


1:03AM PDT on May 25, 2014

Thanks for the pics and info on these ingenious little guys!

2:03PM PDT on Jun 1, 2013

Thank you!

8:01AM PDT on May 29, 2013

so cute,thank you for sharing

1:14PM PDT on May 13, 2013

śliczne zwierzątka, małe jest piękne

9:23AM PST on Feb 12, 2013

thanks, sharing!

10:27AM PDT on Oct 12, 2012

they are so CUTE

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