proestrous en · ADJ
Etymology
From pro- + estrous.
Meanings
-
(not-comparable) Leading to estrus.
It has been shown that male dogs get sexually excited on perceiving the urine and vaginal discharge of females in heat [71 ], and they also sniff and lick the anogenital regions of females in the proestrous stage [72 ].
2015 December 3, “When Love Is in the Air: Understanding Why Dogs Tend to Mate when It Rains”, in PLOS ONE, →DOI: