“Wellsian cattle” was a species of non-sentient humanoid aliens who once existed in the 97th Cosmos.
This species of bipedal animals with bovine features existed on the 97th Cosmos's planet Wellsia up until the late 19th century; they were farmed from their blood by the octopoid masters of the planet, the Wellsians. However, they were too fragile to survive the cannon-based space-flight of the Wellsians' exodus from their world in the mid-1890s, leading them to find new foodsources.
Behind the scenes
Wellsian cattle appeared in the 2019 cartoon The Wellsians, being based on the unnamed humanoid cattle from the original H.G. Wells War of the Worlds novel.