"ଓଧ" ପୃଷ୍ଠାର ସଂସ୍କରଣ‌ଗୁଡ଼ିକ ମଧ୍ୟରେ ତଫାତ

*[https://web.archive.org/web/20080509084301/http://www.arkive.org/species/ARK/mammals/Lutra_lutra/ ARKive] Photographs and videos of Eurasian otters. On the same site are photos and videos of the marine otter (''Lontra felina''), sea otter (''Enhydra lutris''), smooth-coated otter (''Lutrogale perspicillata'') and giant otter (''Pteronura brasiliensis'').

*[http://www.otter.org/ International Otter Survival Fund]