There made out of Meat

I know the question has been asked..

what would aliens think if they happened upon our quaint little planet?

I guess it would have to be up to who the aliens were and how similar or dissimilar they were too us or other life forms they found on earth.
What if they were way more advanced than us but sympathized with the plight of say cows shit we would be in trouble.

Here is an interesting spin on the question