The night glider split from its ancestor, the blood shrew. The flap of skin between its ancestor's legs expanded and became a membrane for gliding. It is nocturnal, and the eyes grew bigger as big eyes are good at night. When it finds a sleeping plent, it lands on it, and then scrapes the skin using modified canine teeth; then the tongue laps up the green "blood". Since its digestive system completely adapted for the consumption of blood, it stopped eating worms and smaller plents. When sleeping, they attach themselves onto any tall plant they can find, preferably pagodapalms. Their tails developed a stabilizing "fin".
When the babies are mature enough they leave the pouch. The babies instinctively knows how to glide, and they leave their mothers.
Artwork by OviraptorFan