Had any luck breeding your robot lately
There are certain advantages to organic systems, replacement for one.
Traits I can see in a popular alien mount:
- Must be able to carry at least one rider easily, and preferably two or more
- Trainable and obedient. The more intelligent the better, but not to the point of suggesting sentience. Smart monkey level or better.
- If popular enough to be on multiple worlds it must need to be very tolerant of a wide range of gravities and atmospheres.
- Cute factor enough to appeal to a wide set of tastes.
- Speed enough to outdistance humans on foot, preferably much faster.
- Herbivore or omnivore. Carnivores are sexy but a little dangerous.
- Bisexual or hermaphrodite. Self fertilising hermaphrodite has certain advantages.
- Other traits, for example a manipulative appendage or the ability to climb, would be highly noted.
Any thing else?
I still can't get the image of a permed pigmy wooly mammoth with enourmous eyes, ribbons in its hair and a petite little saddle. Too cute for its own good.