Water repellant fur,live near and spend much of their time in water.
they both like the water.
Otters are Mustelids, carnivores, and water rats are rodents. Otters are larger, with a rounded muzzle, and a fur covered tail, whereas the water rat has a naked tail.
Water birds, rats, ants, snakes, frogs, otters, other crabs, fishes, sharks, octopuses, human... water pollution, destruction of habitats...
Manatees and river rats and possibly otters.
In rivers i have seen around the world you could find fish of all kinds, crocodiles, hippos, otters, water rats, beavers, eels, snakes and toads.
no rats have gills, incuding water rats
Rats have similar bodily systems and organs to humans, and react in very similar ways.
It is similar to other rodents, such as guinea pigs, rats, and hamsters.
They look similar. That's about it.
yes. water rats are one of the most endangered mammals in the world.
Grand Order of Water Rats was created in 1889.
Approximately fourteen dogs in length (or 37 large rats.)