- The horse (Equus ferus caballus) is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of Equus ferus. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature, Eohippus, into the large, single-toed animal of today. Humans began domesticating horses around 4000 BCE, and their domestication is believed to have been widespread by 3000 BCE. Horses in the subspecies caballus are domesticated, although some domesticated populations live in the wild as feral horses. These feral populations are not true wild horses, as this term is used to describe horses that have never been domesticated. There is an extensive, specialized vocabulary used to describe equine-related concepts, covering everything from anatomy to life stages, size, colors, markings, breeds, locomotion, and behavior.
- Miaplacidus (stars.astro.illinois.edu)
MIAPLACIDUS (Beta Carinae). In spite of intense study, some stars refuse to yield their true characters. Here is the opposite, one that seems to be about as completely understood as reasonably possible. One of the few stars of the far southern hemisphere to carry a proper name, Miaplacidus – Beta Carinae in Carina, the Keel of the Ship Argo – is also one of the brightest of the sky.