Here is a site with all types of penguin sounds as well as information.
http://www.junglewalk.com/sound/Penguin-sounds.htm
penguins make sounds like squak
yup
no.
by making a wierd piercing noise to warn other penguins
they get stressed out and refuse to mate (reproduce)
of course they do! but I don't know how it's sorta a bird noise :)
Penguins cannot make pancakes.
penguins make their habitats in club penguin and their igloos
Penguins that make nests -- not all penguins make them -- form them from stones that the males can pick up and carry in their bills.
They make noise by making it.
No, goldfish do not make noise.
No, clouds do not make noise.