Miniature horseA miniature horse is a type of horse characterised by its small size. Usually it has been bred to display in miniature the physical characteristics of a full-sized horse, but to be little over 100 cm (40 in) in height, or even less. Although such horses have the appearance of small horses, they are genetically much more similar to pony breeds, such as the Shetland. They have various colors and coat patterns.
MacaqueThe macaques () constitute a genus (Macaca) of gregarious Old World monkeys of the subfamily Cercopithecinae. The 23 species of macaques inhabit ranges throughout Asia, North Africa, and Europe (in Gibraltar). Macaques are principally frugivorous (preferring fruit), although their diet also includes seeds, leaves, flowers, and tree bark.
Nuclear sclerosisNuclear sclerosis is an age-related change in the density of the crystalline lens nucleus that occurs in all older animals. It is caused by compression of older lens fibers in the nucleus by new fiber formation. The denser construction of the nucleus causes it to scatter light.
German ShepherdDog (domestic dog)The German Shepherd, also known in Britain as an Alsatian, is a German breed of working dog of medium to large size. It is characterized by its intelligent and obedient nature. It was developed in Germany from 1899 by Max von Stephanitz, using various traditional German herding dogs, and gained international recognition after the end of the First World War.
RetinoscopyRetinoscopy is a technique to obtain an objective measurement of the refractive error of a patient's eyes. How It WorksThe examiner uses a retinoscope to shine light into the patient's eye and observes the reflection (reflex) off the patient's retina.
DogThe dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of wolves. Also called the domestic dog, it was selectively bred during the Late Pleistocene by hunter-gatherers. Dogs and the modern gray wolf share a common ancestor. Dogs were the first species to be domesticated over 14,000 years ago, before the development of agriculture, though genetic studies suggest the domestication process may have begun over 25,000 years ago.
CatSmall domesticated carnivorous mammalThe cat (Felis catus), also called domestic cat and house cat, is a small domesticated carnivorous mammal. It is a member of Felidae, the family of mammals in the orderCarnivora also colloquially referred to as cats. An obligate carnivore requiring a predominantly meat-based diet, it has retractable claws adapted to killing small prey species such as mice and rats.
RottweilerThe Rottweiler (, UK also , German: [ˈʁɔtvaɪ̯lɐ] ) is a breed of domestic mastiff type dog, regarded as medium-to-large or large. The dogs are known in German as Rottweiler Metzgerhund, meaning Rottweil butchers' dogs, because their main use was to herd livestock and pull carts laden with butchered meat to market. This continued until the mid-19th century when railways replaced droving.
RatRats are various medium-sized, long-tailed rodents. Species of rats are found throughout the order Rodentia, with the genus Rattus containing the most familiar rats. Other rat genera include Neotoma (pack rats), Bandicota (bandicoot rats) and Dipodomys (kangaroo rats). Among the best-known rats are the black rat and brown rat, both of which are native to Asia. Rats belong to the same subfamily as mice and are often distinguished based on their size.
AstigmatismAstigmatism is a type of refractive error due to rotational asymmetry in the eye's refractive power. The lens and cornea of an eye without astigmatism are nearly spherical, with only a single radius of curvature, and any refractive errors present can be corrected with simple glasses. In an eye with astigmatism, either the lens or the cornea is slightly egg-shaped, with higher curvature in one direction than the other.*As an Amazon Associate I earn from qualifying purchases.