Buggalo

Buggalo are giant beetles with cowskin-colored shells that can be milked like 21st century cows (extinct in the 31st century). Leo and Inez Wong farm buggalo at their ranch on Mars, which is one reason why they are extremely rich. Moreover, there are other buggalo farms on The Moon, with one specifically being owned by the Hydroponic Farmer.

Origins
The origin of buggalo is not clear, but it seems that they are from Mars, and Native Martians have domesticated them, using buggalo as flying horses.

Trivia

 * Their limbs make tasty grilling meat.
 * Their shells can be used as row boats.