“…Indeed, kairomones are volatile molecules present in and emitted by the anal glands, urine or feces of mice predators, such as 2,4,5-trimethylthiazoline (TMT) from the fox [ 11 ], 2,6-dimethylpyrazine (2,6-DMP) from the bobcat [ 12 ], 2-propylthietane (2-PT) from the stoat [ 13 ] and trimethylene sulphide (TS) or 1,3-dithiolane (1,3-DT) from several Mustelidae [ 14 ]. We demonstrated earlier that these molecules also activate mouse GG neurons [ 3 ] and that they have, as well, the ability to induce fear-related behaviours in mice [ 3 , 15 – 19 ]. These observations confer to the GG a double role, as it detects both intra- and interspecific danger signals, which bear a conserved chemical structure.…”