Sklisses, Sklizes, Flying Cows, Flying Cattle or Bos sklissus are a non-sapient mammalian species from the planet of Sheshineru in the Milky Way galaxy.
Biology[]

The Flying Cow in Early Illustration of Children's Book
Flying cows are ruminant herbivores with long, webbed, purple translucent wings on their backs. Their appearance is similar to that of an Earth cow. Flying Cows moves most of the time on its feet. They don't fly very fast, are somewhat clumsy, get tired quite quickly and land. In the wild on their home planet of Sheshineru, Flying Cows use flight to fly across rivers and difficult terrain to new pastures. Locals graze squisses like earthlings do cows and sheep. Flying Cows feed on grass (both alien and terrestrial), hay and plant leaves.