Figure 1.

Male reproductive structures (late breeding season) of the western grey kangaroo (Macropus fuliginosus) in situ showing the relations of the muscles of the proximal tail and hindlimb (A) and bony pelvis (B), and dissected out showing the anatomical arrangement of penis, cavernosus muscles and accessory glands from dorsal (C) and ventral (D) views (modified from Martin et al. 2018). Scale bar in lower right corresponds to illustrations (c,d); total body mass 64 kg for this individual. Arteries were injected with coloured latex for greater resolution of vascular components.