This is the newly born North American river otter, who just today got his name - Molalla, or Mo for short, after the Molalla River. A bit more than 4 ounces at birth on Jan. 28, Molalla now weighs about 2 1/2 pounds. They try to weight the river otter when they can but they have to be fast and sneaky. When the mother leaves to go take a dip in the water they quickly shut the door and take Mo out to get his weight and then quickly put him back in the nest. Julie Christie, the senior North America keeper at the zoo, carefully picks Mo up. Photo by Benjamin Brink/The Oregonian











