Twin River Otter Pups Born at Oregon Zoo

Tilly, a North American river otter, gave birth to two pups on February 26 at the Oregon Zoo. Each pup, one male and one female, weighed about four ounces at birth and have doubled in size since then, according to the zoo.

This video shared by the zoo on March 6 shows Tilly with her babies from a private maternity den. It will be another month or two before visitors can see them in their Cascade Stream and Pond habitat. Credit: YouTube/Oregon Zoo via Storyful

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