The environmental nonprofit group Urban Rivers spotted the female beaver along the South Branch of the Chicago River. The group is calling her "remarkably rotund" and say she is likely pregnant.

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A large beaver is turning heads on the Chicago River, but she needs a name. Urban Rivers Volunteer Coordinator Stephen Meyer says this big beaver is easy to spot.

The environmental nonprofit group Urban Rivers spotted the female beaver along the South Branch of the Chicago River. The group is calling her “remarkably rotund” and say she is likely pregnant.