Board Thread:Versus Debates/@comment-33030270-20170924173047/@comment-6769189-20170929104504

Shadow clones have bones, skin, blood, etc etc. Unlike Naruto himself, they are made from chakra.

The tailes beasts, as stated in the manga, are a mass of chakra given form and personality.

We even see this in the jinchuriki's transformations into Tailed Beast mode. At first they are chakra in the vague form of the beast and then the chakra starts forming bones and muscle tissue and skin and such.

Chakra makes all sorts of things. Hagoromo has set the portions of the Juubis chakra to take the form the tailed beasts.