| Name | Lat. name | Length(cm) | Tail(cm) | Weight(kg) | Fur | Paws | Tail | Reproduction | Young ones |
|---|---|---|---|---|---|---|---|---|---|
| Eurasian Otter | Lutra lutra | 57-70 | 35-40 | 7-15 | brown-grey to dark brown | skilled webs, strong claws | tail base thick | everytime | 2-5 |
| River Otter | Lutra canadensis | 66-107 | 32-46 | black-brown nearly black to redlike black | skilled webs, strong claws | March/April | 1-5 | ||
| Chileniann otter | Lutra felina | 57-59 | 30-36 | upside dark brown, downside bright shaded | skilled webs, strong claws | 2 | |||
| Central American Otter | Lutra annectens | 57-70 | 30-50 | similar to canadien otter | skilled webs, strong claws | 3 | |||
| South American Otter | Lutra longicaudis | 50-79 | 38-57 | cinnamon brown to grey brown at his back with more or less leather or beige spots. | skilled webs, strong claws | 1-4 | |||
| Hair Nosed otter | Lutra sumatrana | 50-82 | 35-50 | upside dark brown, downside slightly brighter, neck sometimes white | skilled webs, strong claws | unknown | unknown | ||
| spotted necked otter | Hydrictis maculicollis | 58-69 | 33-45 | upside very dark to medium brown, downside slightly brighter, neck and/or loins usually with unregular beige white dots and spots. | webs nearly till toetips, strong claws | unknown | 1-4 | ||
| Soft Furred Otter | Lutrogale perspicillata | 66-79 | 41-51 | neck grey brown, cheeks bright grey nearly white | big feet, thick webs, strong claws | Oktober or December | 1-4 mostly 2 | ||
| Asian Small Clawed Otter | Aonyx cinerea | 41-64 | 25-35 | 2.7-5.4 | medium to dark brown, neck brighter white or gray shaded | slim paws, short webs, blunt claws | everytime | 1-6 | |
| Cape Clawless Otter | Aonyx capensis | 73-100 | 41-67 | 14-23 | upside to dark brown sometimes pale, neck and cheeks white | only small webs, no claws | everytime | 1-6 | |
| Giant Otter | Pteronura brasiliensis | 96-150 | 45-70 | up to 24 | very dark brown, chin, neck and chest with beige spots, muzzle lipps and chin often white shaded or white dotted | big feet, skilled webs till toetips | round, lancelike, wides point in the middle | everytime | 1-5 mostly 2 |
| Sea Otter | Enhydria lutris | 55-130 | 13-33 | 25-45 | upside brown, head straw coloured | front feet small no clear toes, back feet very big, finlike | flattened | everytime | 1 |
