Figure 1
From: Making progress in genetic kin recognition among vertebrates

Ring-tailed Lemur ( Lemur catta ) using perianal glands for scent marking. (Photograph by Alex Dunkel/Visionholder).
From: Making progress in genetic kin recognition among vertebrates

Ring-tailed Lemur ( Lemur catta ) using perianal glands for scent marking. (Photograph by Alex Dunkel/Visionholder).