Ovine rinderpest virus does not infect humans. This disease was first described in 1942 in Côte d'Ivoire. Now, PPR has spread to more than 70 countries in the world. In 2017, the disease was reported to be affecting saiga in Mongolia, causing near-catastrophic herd depletion for the endangered species. In 2018, the disease was reported to be in Bulgaria close to the border with Turkey. PPR is also known as goat plague, "kata", syndrome of stomatitis-pneumoenteritis, and ovine rinderpest. Official agencies such as the FAO and OIE use the French name ""peste des petits ruminants"" with several spelling variants. Symptoms are similar
Animal coloration resemblance; mimesis, resembling other objects of no special interest to the observer, which relates to special resemblance; countershading, using graded colour to create the illusion of flatness, which relates mainly to general resemblance; and counterillumination, producing light to match the background, notably in some species of squid. Countershading was first described by the American artist Abbott Handerson Thayer, a pioneer in the theory of animal coloration. Thayer observed that whereas a painter takes a flat canvas and uses coloured paint to create the illusion of solidity by painting in shadows, animals such as deer are often darkest on their backs,