you guys found my signature! ...one of them. the other's a bit more cryptic.
anyway...

Meet the Cloudfur.
Cloudfurs are a subspecies of Canis lupus with the peculiar trait of hollow bones. This, combined with their fluffy mane, allows them to imitate flying through a series of controlled jumps and gentle floating. Many have wing-like protrusions from their fluffy mane, but as there's no bones or muscles inside this is purely aesthetic.
Very rarely, cloudfurs with working wings may be born, granting the ability of true flight. Cloudfurs with this mutation generally end up as pack leaders - if they can get through all the teasing and jealousy from others throughout puphood.
FUN FACTS✦Cloudfurs won't be injured from falls of any height, so long as they're not carrying anything.
✦The average fullgrown cloudfur can carry the weight of approximately one large pillow while still floating at a safe speed. This is about the weight of a teenage cloudfur, or a really skinny fullgrown one.
✦A fullgrown cloudfur capable of true flight is still only able to carry the weight of about two large pillows; around the weight of an average fullgrown male.
✦Cloudfurs are extremely fragile due to their delicate bones, which can be broken from excessive hugging. They are not recommended as pets for young children.
CAUTION✦Cloudfurs can not support the weight of a human rider, not even a child, so do not attempt to ride your cloudfur!