Food, water, homes, and territory.
i do believe they build there homes with sticks mud and other things that they can find around their water area. Otters have a sense that if the winter is very harsh they will build there home thicker and if ti is going to be a easy winter they will build it light.
The plural of otter is otters.
No, male otters do not drown female otters during mating.
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.
Otters
Otters.
mostly river otters, sea otters and other types of otters.
yes, sea otters have young sea otters called pups
No. Otters are not native to Australia. Apart from the occasional zoo, there are no otters in Australia.
There are both freshwater (river otters) and salt water otters.
There are 13 species of otters.