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This dog's stifle joint is labeled 12. The stifle joint (often simply stifle) is a complex joint in the hind limbs of quadruped mammals such as the sheep, horse or dog. It is the equivalent of the human knee and is often the largest synovial joint in the animal's body. The stifle joint joins three bones: the femur, patella, and tibia.
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .
The most common of the ancient, now-extinct wild horse species in North America, Dinohippus, had a distinctive passive stay apparatus that helped it conserve energy while standing for long periods. Dinohippus was the first horse to show a rudimentary form of this characteristic, and its existence provided additional evidence of the close ...
References A ace Slang for the drug acepromazine or acetyl promazine (trade names Atravet or Acezine), which is a sedative : 3 commonly used on horses during veterinary treatment, but also illegal in the show ring. Also abbreviated ACP. action The way a horse elevates its legs, knees, hock, and feet. : 3 Also includes how the horse uses its shoulder, humerus, elbow, and stifle; most often used ...
In the English language, many animals have different names depending on whether they are male, female, young, domesticated, or in groups. The best-known source of many English words used for collective groupings of animals is The Book of Saint Albans , an essay on hunting published in 1486 and attributed to Juliana Berners . [ 1 ]
The following outline is provided as an overview of and topical guide to zoology: . Zoology – study of animals.Zoology, or "animal biology", is the branch of biology that relates to the animal kingdom, including the identification, structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems.
Animal rights organization PETA published a scathing critique of a group of Chinese researchers on Thursday, accusing them of using live animals as crash test dummies.
The following is a list of the classes in each phylum of the kingdom Animalia. There are 107 classes of animals in 33 phyla in this list. However, different sources give different numbers of classes and phyla. For example, Protura, Diplura, and Collembola are often considered to be the three orders in the class Entognatha. This list should by ...