Any shark of the genus Glyphis (family Carcharhinidae).

plural of river shark

The common European otter (Lutra lutra). / Lontra canadensis (North American river otter) / Lontra felina (marine otter, sea cat) / Lontra longicaudis (South American river otter)

(obsolete) capybara (Hydrochoerus hydrochaeris)

plural of river hog

The name of many rivers, mostly in the United States, but also in Canada and South Africa. / An unincorporated community in Henry County, Illinois, United States.

A number of rivers in Canada and the United States, including Alaska. / A community in Machin, Ontario, Canada. / A community in Anchorage, Alaska, United States.

plural of river otter

a river in Kyōto Prefecture, Japan, a tributary of the Yodo River

A bird, the sand martin.