Figure 1.
Ventral view of a female sugar glider’s abdominal wall. (a) The black arrow points to the opening of the pouch (marsupium). (b) Marsupium: the pouch was opened to show the four teats (mamae) (⇨). (c) Marsupium: the left part of the pouch was opened to show the secretory glands (). A joey can be seen deep inside the pouch.