Species which need to consume gaseous oxygen for their metabolism.
“Allegedly, the Sheegupt were a sapient, space-faring species of the Milky Way Galaxy. It's not...Sheegupt
“The Chirpsithra (or simply Chirps) are a sapient, space-faring race of crustacean-like bipeds...Chirpsithra
Pages in category "Oxygen Breathers"
The following 16 pages are in this category, out of 16 total.