First documentation of flehmen in a common hippopotamus (Hippopotamus amphibius)
Abstract 10.1002/(SICI)1098-2361(1999)18:53.3.CO;2-Q A male common hippopotamus (Hippopotamus amphibius) was observed giving a flehmen grimace on 14 occasions in July and August of 1998 at the Denver Zoo. Twelve instances of flehmen occurred after anogenital investigation of the female as she was exiting the pool. The two other instances of flehmen occurred in the terrestrial portion […]
The “male effect” in sheep and goats: a review of the respective roles of the two olfactory systems
In sheep and goats, exposure of seasonally anestrous females to sexually active males results in activation of luteinizing hormone (LH) secretion and synchronized ovulation. This phenomenon is named “the male effect” and seems to constitute a major factor in the control of reproductive events. This effect depends mostly on olfactory cues and is largely mimicked […]