Social system - Comparatively little information exists about the mating system and social organization of the river otter. The female-young or family group comprises the basic social unit. After the ...

You could see some otter mothers – distinguishable due to nose scars incurred during mating – demonstrate behaviors to pups, including grooming and cracking clam shells.

Previously, a stranded sea otter pup had little hope of survival. But the aquarium's ambitious program has taken in some 189 otters, providing round-the-clock care.

Even though the river otter is a Florida native, there’s a good chance you’ve never seen one outside of a zoo. Just be warned: They’re cute but also get nasty.

Sea otters in Ollie's situation have been known to accost birds, river otters and seal pups, Watson said. Cameron said she's even aware of a sea otter attacking a dog in this way.