I think why they can run fast is something to do with their feathers.
Yes it does it has a streamlined body
Streamlined often means aerodynamic.
An ostrich has 56 bones in its body.
yes
yes!
to fly
Sharks have a streamlined body
Yes, they do.
cause its fwong
slippy
Yes, they do.
It is to swim faster when it is catching their prey and running away from its predator. Its streamlined body shape helps it to swim faster.