“Substances that are found in urine samples from females in estrus may stimulate male dogs to seek closer and longer contact, accompanied by sniffing and licking … even male dogs intensely lick a female’s vulva before attempting to mate the female.
“There is a definite preference in male dogs for estrous females and for the urine and vaginal secretions from estrous females, as compared with the eliminative products from anestrous females or males.”
“a male dog … had a urinary chemical profile similar to that of a female in estrus … and adult, intact males made mating attempts during contact with him” – çka ilustron rëndësinë e sinjaleve kimike.
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