Consider The Horse: A Natural History by Debbie Busby and Catrin Rutland*. Most books about horses are about how to take care of your horse, or how to learn to ride your horse, or some other thing about your horse. This book is about the horses themselves, about their biology, behavior, and history.

This volume is loaded with excellent illustrations including graphs, charts, and photos. If you leave it on your coffee table, people will pick it up and thumb through it, and be glad they did, once you start letting people into your house.

This is the best horse book out there currently, and is a perfect holiday gift for your horse loving relative who, once they recieve it, will surely not look it in the mouth.

Debbie Busby has degrees in applied animal behavior and welfare and psychology, specializing in horses, and is certified by the International Association of Animal Behavior Consultants. Catrin Rutland is associate professor of anatomy and developmental genetics at the School of Veterinary Medicine, University of Nottingham, UK, and writes for a number of outlets including the Telegraph and the Guardian.

Of which there are 570.

A horse is horse, of course, but but is a donkey or an ass? What about zebras?

Horse people are very picky about what they call a horse. It is generally thought that there are onlly three living or recent species of horse. The Prewalski’s horse (Equus ferus prezewalski), which lives in Asia, the tarpan (Equus ferus ferus) which is the European version of this animal, and went extinct when the last zoo inmate of this species died in 1909, and the modern horse, Equus ferus caballus. But if you think of a horse as a member of the genus Equus, there are more, including the donkey/ass and three species of zebra, the Kiang (a Tibetan ass), and another Asian ass called the Onager. And, since when speaking of horses, the extinct European wild horse is generally mentioned, we will add the Quagga, the half horse-half zebra (in appearance) African equid that went extinct in 1984 (having disappeared from the wild in 1883).

Since “horses” (as in Mr. Ed and friends) and Zebras can interbreed successfully, and some of these other forms can as well to varying degrees, we need to think of Equus as a close knit genus and not be exclusionary in disregarding the Zebra and Donkey.

Anyway, that is not what this book is about. As noted, there are some 570 or possibly more varieties of horse (no two experts will likely agree on that number) and Horses of the World covers them all. There is introductory material about horses, breeds, how we tell them apart, conservation status, etc. Each horse breed is then given one half of a page on each of two folios, so you see overleaf some illustrated text on one side, and a fuller and very official illustration on the other, for most breeds, with some variation.

This is one of the few books that comes with a movie, compete with some rather galloping music:

Élise Rousseau is the author of numerous books on horses. Illustrator Yann Le Bris has illustrated numerous books.

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In the vicinity of Rio Tercero…

Hearing … of the remains of one of the old giants, which a man told me he had seen on the banks of the Parana, I procured a canoe, and proceeded to the place. Two groups of immense bones projected in bold relief from the perpendicular cliff [but] I could only bring away small fragments of one of the great molar-teeth … sufficient to show that the remains belonged to a species of Mastodon. The men who took me in the canoe, said they had long known of them, and had often wondered how they had got there: the necessity of a theory being felt, they came to the conclusion, that … the mastodon formerly was a burrowing animal!

In remote St. Fe …

A tooth which I discovered … interested me much, for I at once perceived that it had belonged to a horse. Feeling much surprise at this, I carefully examined its geological position, and was compelled to come to the conclusion, that a horse, which cannot … be distinguished from the existing species, lived as a contemporary with the various great monsters that formerly inhabited South America. Mr. Owen and myself, at the College of Surgeons, compared this tooth with a fragment of another, probably belonging to the Toxodon, which was embedded at the distance only of a few yards in the same earthy mass. No sensible difference in their state of decay could be perceived; they were both tender, and partially stained red. … Certainly it is a marvellous event in the history of animals, that a native kind should have disappeared to be succeeded in after ages by the countless herds introduced with the Spanish colonist! But our surprise should be modified when it is already known, that the remains of the Mastodon angustidens (the tooth formerly alluded to as embedded near that of the horse, probably belonged to this species) have been found both in South America, and in the southern parts of Europe.

Weighty considerations of the distribution of extinct and extant fauna lead Darwin to the neighborhood of modern geological concepts.

Very few species of living quadrupeds, which are altogether terrestrial in their habits, are common to the two continents, and these few are chiefly confined to the extreme frozen regions of the north. The separation, therefore, of the Asiatic and American zoological provinces appears formerly to have been less perfect than at present. The remains of the elephant and of the ox have been found on the banks of the Anadir (long. 175° E.), on the extreme part of Siberia, nearest the American coast: and the former remains, according to Chamisso, are common in the peninsula of Kamtschatka. On the opposite shores, likewise, of the narrow strait which divides these two great continents, we know, from the discoveries of Kotzebue and Beechey, that the remains of both animals occur abundantly: and as Dr. Buckland has shown they are associated with the bones of the horse, the teeth of which animal in Europe, according to Cuvier, accompany by thousands the remains of the pachydermata of the later periods. With these facts, we may safely look at this quarter, as the line of communication (now interrupted by the steady progress of geological change) by which the elephant, the ox, and the horse, entered America, and peopled its wide extent.

Now, here we have Darwin on the verge of understanding the rise of the Panama Land bridge (or something like that) based on the biogeography. The above passage, the following passage, and other material is very frustrating. If Darwin was not such a geological gradualist he could have advanced geology to the 1950s with a single fell swoop of reasoning!!!!

The occurrence of the fossil horse and of Mastodon angustidens in South America, is a much more remarkable circumstance than that of the animals mentioned above in the northern half of the continent; for if we divide America, not by the Isthmus of Panama, but by the southern part of Mexico, .. where the great table-land presents an obstacle to the migration of species, … we shall then have two zoological provinces strongly contrasted with each other. Some few species alone have passed the barrier, and may be considered as wanderers, such as the puma, opossum, kinkajou, and peccari. The mammalogy of South America is characterized by possessing several species of the genera of llama, …, tapir, peccari, opossum, anteater, sloth, and armadillo. If North America had possessed species of these genera proper to it, the distinction of the two provinces could not have been drawn; but the presence of a few wanderers scarcely affects the case. North America, on the other hand, is characterized by its numerous rodents, and by four genera of solid horned ruminants, of which section the southern half does not possess a single species.

Just so you know, South and North America were separated, and had largely independent mammalian evolution (and migration), until very recently, about five million years ago, when the isthmus of Panama was raised.

Darwin is seeing the very time-deep echo of this event, masked by subsequent migration of North American mammals in to South America, and clouded by the more pressing (to him) question of Old World and New World relationships.

It is interesting that the monkey’s (appearing in both the old world and new world tropics) don’t freak him out. They freak me out.

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