Guess what it is ... ~

It has a pair of ears, two big shiny black eyes and a tiny nose.
Its body size is quite small, almost the size of a cup or a tea cup and may be bigger a little.
It's colour of the body fur coating is white grayish coloured.
It has small feet’s but a strong grip with its fingers that is good for climbing.
It can eat almost anything although its favourite food is nuts or seeds.
It has the ability to soar in the air for not very long but far however it is still convenient.
It is not a bird that has a pair of wings to fly, but
It uses its body skin between its arms and legs for its ability with a stretch.
It seems innocent and it is food for its predators which are big, dangerous, and scary too.
It also has a helpful companion behind it that is always following it around, supporting and controlling its action and stability where ever it goes.
It's good and fluffy companion is also helpful in away to accompany it and to keep it warm, secure and sometimes makes people think that it has a cute appearance with it's trustworthy companion.
So who or what is ‘it’?

Please place your answer in comment if you want ~ enjoy
Hint: the answer starts with the letter ‘f’. ^ ^
~^zakyura^~