Japanese artist Masayoshi Matsumoto makes balloon animals, but we're not talking about amateur hour dog stuff.

Here is the balloon jellyfish in its natural habitat, a dark void of nothingness.
(all images via Matsumoto's Tumblr)

Matsumoto only uses balloons to make these creations, and says he never uses markers or adhesive. I'm guessing that's because in the world of balloon animal auteurs, glue is essentially plagiarism. Here are some of the coolest creatures from his Tumblr:

Unlike its helium balloon brothers and sisters, this bird cannot fly.

The balloon hermit crab changes its balloon shell zero times in its lifetime.

This is one of the cutest bags of air I've ever seen.

Sources: Mashable | Masayoshi Matsumoto