Troll, S Characterization of the ovarian cycle in the two-toed sloths (Choloepus didactylus): an innovative, reliable, and noninvasive method using fecal hormone analyses. [electronic resource] - Theriogenology Aug 2013 - 275-83 p. digital Publication Type: Journal Article ISSN: 1879-3231 Standard No.: 10.1016/j.theriogenology.2013.04.007 doi Subjects--Topical Terms: AnimalsFeces--chemistryFemaleGonadal Steroid Hormones--chemistryOvary--physiologyPeriodicitySloths--physiology