Riddle #3

This thing runs but cannot walk,
Sometimes sings but never talks.
Lacks arms, has hands;
Lacks a head but has face.

What is that thing? >_<

Riddle #2

What makes a loud noise,
when changing its jacket
and becomes larger, but weighs less?

What is it? :)

Riddle #1

What is it that has four legs,
One head and a foot?

=)