There are many types of river otters. The only way I could answer your question would be if you said which type you were referring to. If you mean the giant river otter, it is threatened by habitat loss and poaching, and fishermen sometimes kill them because they think that the giant river otters are a nuisance. In the past, otter pelts were very valuable, and massive amounts of hunting have decimated populations of many, if not all, species of river otters worldwide.
Habitat destruction and water pollution are the main threats to otters.
Missouri River Otters was created in 1999.
Yes, it is a river otter. Sea otters are fatter and are flufflier
Yes. Otters eat fish, shellfish, crustaceans mainly.
web feet and river otters are bigger
Yes, the river otter is endangered for a few reasons: many because of water pollution and oil spills (it damages their fur) and hunting. They were hunted for their fur which is very valuable.
River otters do eat snakes but, only small snakes
mostly river otters, sea otters and other types of otters.
There are many types of river otters, and some are social while others are not. The Giant River Otter from the Amazon lives in packs, as do North American river otters, female Southern river otters, (males are solitary). The European river otter is extremely territorial.
yes
There are both freshwater (river otters) and salt water otters.
There are sea otters and other otters. In the category of "other" otters, you can include the North American River Otter, Giant Otter of South America, Asian small clawed otters, Congo clawless otters, Capr clawless otters, Southern river otters, hairy nosed otters, spot necked otters, neo tropical long tailed otters, and others I may fail to mention.