Abstract The 42 compounds identified in the pale yellow preorbital secretions of the bontebok, Damaliscus dorcas dorcas, and the blesbok, D. d. phillipsi, include acetic acid, 2- methylbutanoic acid,(E)-2-methyl-2-butenoic acid, benzoic acid, 4-hydroxybenzoic acid, saturated and unsaturated long-chain carboxylic acids, 4-hydroxybenzaldehyde, saturated and unsaturated, unbranched, long-chain alcohols and aldehydes, 2-heptanone, pentane, ...