squinney wrote:Um, you also don't domesticate what you eat.
That's nonsense--horses were hunted for food before they were domesticated. Sheep and cattle were both hunted for food before they were domesticated.
One thing which is also being missed here is that horses have a unified hoof.
Even fossilized ancient horse hooves are unitary.
This is not true of the hoof of a moose.
This is not true of the hoof of a caribou.
(I was unable to find an image of the hooves of bison and elk.)
The hoof of a horse is capable of supporting a great deal of weight at a variety of gaits, far more weight than the body weight of the horse. Combined with a broad back, the horse is ideal for riding. Bison have large "shoulders," with a hump, and relatively small pelvises. Moose are huge animals, and fossil remains show even larger moose and bison than exist today. The thought of domesticating animals doesn't seem to have occurred to the Amerindians, and justifiably so. They did use llamas for beasts of burdens, but those are hardly suitable for being ridden by people.
The first horses were much smaller than modern horses. It was likely much easier to domesticate and then ride early horses. All the equid species (horses and horse-like animals) have the unitary hoof and broad backs--even so, disposition must play a part. Horses and asses have been domesticated, but zebras and quagas have not.
I suspect that it didn't even occur to the Amerindians to attempt to domesticate an animal for riding. When the Spanish first landed in Mexico, the locals were dismayed when they saw men riding horses, and thought it was a single, diabolic animal. They quickly learned that it was a man on the back of an animal, but they "didn't get" the concept right away. About a generation after the Spanish "conquered" what we call Peru, the Amerindians rebelled against then. One aspect of that rebellion which was unique in the annals of Amerindian warfare against the Europeans was that the Peruvians used horses in that rebellion. The rebellion failed, but for reasons other than whether or not they rode horses. Americans and Canadians only encountered mounted Amerindians well after the aboriginals had become accustomed to domesticated horses. Terrain may have played a part, as well. Wars between Amerindians and Europeans north of Mexico originally took place in eastern forests, and not on the plains, until well into the 19th century.
The Wabbit's objections to the use of kangaroos as beasts of burdens apply to many other animals also. Even when cattle are used as beasts of burden, they are used to pull carts or wagons, they are not ridden, and they don't have loads packed on their backs. Disposition may matter, too. The cattle which are used as beasts of burden are oxen--gelded bulls. Anyone familiar with domesticated bovines will know that even domesticated, a bull is nobody to mess with.
Camels hooves are "cloven" as are the hooves of most other large animals.
However, you'll note that the entire profile of the hoof as it rests on the ground is spatulate--flat and broad. Additionally, they were originally domesticated for use in sand and soft soils--attempts to introduce the camel in the American plains and in Australia were less than resounding successes. I suspect, though, that this had as much to do with the prevelence of the horse as it did with any deficiency in using camels in a role for which they have already proven useful.
The equid species are uniquely qualified for this role. As for the Amerindians, they didn't domesticate any animals, with the exception of the llama, and the dog, which i believe it is correct to say they brought with them from Asia. (I don't believe there is any evidence that the Solutrians who are now thought to have arrived in North America thousands of years before the ancestors of the Amerindians who came from Asia brought any domestic animals with them, if in fact they did arrive when it is thought they did. On that topic, there is good inferential evidence that stone age people from Europe did arrive in North America. Since the Solutreans were gone by 15,000 years ago, when the Asiatic migrations to North America are thought to have begun, it would imply that the Solutreans reached North America
before the Asiatics did. The basis for the claim is a significant non-Asiatic genetic component in Amerindian genotypes--3% overall, but about 25% in eastern Canadian tribes. The DNA markers are very ancient, and the possibility that it came by way of migrations east from Europe to eastern Asia, and then into North America is remote, since that DNA marker is missing from the tribal people of northeast Asia today.)
All in all, i'd simply observe that apart from camels, no animal is as suitable for riding as equid species, and that the Amerindians probably didn't even think of it until they saw Europeans on horse back.