There are actually 60 species of gliding mammals which have flaps of skin that extend between their forelegs and hind legs.
Flying squirrels (43 species), colugos (also known as flying lemurs), scaly-tailed flying squirrels (which are African rodents, and not related to actual squirrels - 7 species but only 6 have membranes), and the ten species of Australian or New Guinean marsupial flying possums and gliders all have this feature.
Bats, and also flying squirrels. In the time of the dinosaurs, the Pterodactyl also had them, but these became extinct tens of millions of years ago.
sugar glider
Bats
So they can catch the wind and glide when jumping from place to place.
Flaps of featherless skin between their front and back legs helps it fly better and faster
To begin with, a flying squirrel does not have "featherless skin" as it is a mammal. It has skin without fur. Mammals do not have feathers. Secondly, the flaps of skin help these animals glide. Although they are called "flying squirrels", in reality they are "gliding squirrels". When they leap from a high point, they extend their forelegs and hind legs, spreading these skin membranes which then catch the air currents, allowing them to glide a short distance between tree branches. In this way, they can evade ground-dwelling predators more easily.
Sugar Gliders are small marsupial animals that are usually found in Australia and surrounding islands. They have flaps of skin between their front and back legs, allowing them to briefly glide between one tree and another in their search of food, mates, and shelter.
To begin with, a flying squirrel does not have "featherless skin" as it is a mammal. It has skin without fur. Mammals do not have feathers. Secondly, the flaps of skin help these animals glide. Although they are called "flying squirrels", in reality they are "gliding squirrels". When they leap from a high point, they extend their forelegs and hind legs, spreading these skin membranes which then catch the air currents, allowing them to glide a short distance between tree branches. In this way, they can evade ground-dwelling predators more easily.
Bats have skin between their front and back legs to help them in flight. When they fly, bats spread their legs and use the skin to glide because it creates air resistance.
A flying squirrels patagium allow it to glide.
tricuspid valve
Only birds have feathers; this feature never evolved in mammals, and squirrels are mammals. The extra skin in a flying squirrel functions as a glider; it catches the air and helps the squirrel to jump for great distances.
You can have index cards as flaps and put the date on the front and when you flap it over, info is on the back
they need to have it because it is their pouch.
Only one mammal can truly fly, the bat. True flight is when the animal can flap its wings to gain height, birds and bats. Gliders launch themselves from height and spread the flaps of loose skin from front to rear paws, like a hang glider, from one tree-top to half way down the next.