Editing Asian small-clawed otter (section)

=== Reproduction ===
[[File:2018-07-21 AT Wien 13 Hietzing, Tiergarten Schönbrunn, Aonyx cinereus (49288100381).jpg|thumb|Captive pups]]
Information about the Asian small-clawed otter's [[mating]] and breeding behaviour has been studied in captive environments. Captive pairs are [[monogamy in animals|monogamous]]. The [[estrous cycle]] of females lasts 28 to 30 days with [[estrus]] lasting between one and 13 days. Usually, mating takes place in the water.<ref name=Lancaster1975>{{cite journal |author=Lancaster, W. E. |year=1975 |title=Exhibiting and breeding the Asian small-clawed otter at Adelaide Zoo |journal=International Zoo Yearbook |volume=15 |pages=63–65 |doi=10.1111/j.1748-1090.1975.tb01355.x}}</ref>
[[Gestation]] lasts 62 to 86 days. Interval between births is at least eight months.<ref>{{cite thesis |author=Sobel, G. |title=Development and validation of noninvasive, fecal steroid monitoring procedures for the Asian small-clawed otter, ''Aonyx cinerea'' |type=Master of Science |publisher=University of Florida |year=1996 |location=Gainesville, Florida}}</ref>
About two weeks before [[parturition]], both female and male engage in building a nest. They collect grass, hay or straw and carry this material into the breeding chamber. Between one and seven pups are born in a [[Litter (animal)|litter]]. Pups are born with closed eyes, which open in the fifth week.<ref name=Lancaster1975/>
Newborn pups weigh between {{cvt|45.6|and|62.5|g}} and reach a weight of {{cvt|410-988|g}} after 60 days.<ref>{{cite book |author1=Maslanka, M. T. |author2=Crissey, S. D. |name-list-style=amp |year=1998 |chapter=Nutrition and diet |pages=1–18 |title=Asian small-clawed otter (''Aonyx cinerea'') husbandary manual |editor1=Lombardi, D. |editor2=O’Connor, J. |publisher=Columbus Zoological Gardens and AZA Asian Small-Clawed Otter SSP |location=Powell, Ohio}}</ref> They start exploring the environs of the breeding den at the age of ten weeks. At about three months, they enter and paddle in shallow water under the guidance of the mother. They become independent at the age of four to five months.<ref name=Lancaster1975/>