**** During sexual excitement, the boar produces copious quantities of foamy saliva. The active components in saliva are the androgen metabolites '''3α-Androstenol''' and '''5α-Androstenone'''. Both have a musk-like odour. | **** During sexual excitement, the boar produces copious quantities of foamy saliva. The active components in saliva are the androgen metabolites '''3α-Androstenol''' and '''5α-Androstenone'''. Both have a musk-like odour. |