Are horns hollow inside?
Yes, horns and tusks are hollow, antlers aren't :)
yep, they used to be filled w marrow, if u count that as hollow
horns are HOLLOW?!?!?!?!
no, they are not.
They are are hallow after you remove the marrow that exists inside the horn while the animal is alive.
Yes and used as trumpets. But all horns are not hollow.