All mammals, like all vertebrates, have bilateral symmetry. This means they have symmetry across one plane (known as the sagittal plane, and directly down the centre of their body), which means one side of their body approximately mirrors the other side.
most of them don't.
They are bats, sugar gliders, flying squirrels.
Flying squirrels are mammals and mammals are vertebrae, they have backbones.
A flying bat has external bilateral symmetry like humans.
Flying lemurs, or colugos, are mammals and are closely related to tree shrews and primates.
Bats are the flying mammals. There are some squirrels that 'glide' that are referred to as flying squirrels.
A conversation between two flying mammals is a bat chat.
Like all mammals, jaguars exhibit bilateral symmetry with the backbone as the median.
Bats are mammals, and all mammals have bilateral symmetry. This means they have symmetry across one plane (known as the sagittal plane, and directly down the centre of their body), which means one side of their body approximately mirrors the other side.
Yes. The flying fox is a type of bat (a fruit bat), and all bats are mammals.
Bats are indeed flying mammals.
Think of it as the same thing as land mammals versus water mammals. Marine mammals first evolved to life on land and then adapted to return to the water, but not all mammals did that. Similar thing with birds. All birds evolved from common flying ancestors, whereas flying mammals evolved from land mammals at a much later point in evolutionary history. Hope that helps.