Halal certification in Europe bodies. According to the Halal Food Authority (HFA) in the UK, poultry (chickens, turkeys and ducks) can only be "immobilised" prior to slaughter using electric water baths, while ovine animals (lamb, sheep and goat) can only be stunned using electric tongs. The majority of bovine animals (cattle, bull, cow and ox) in the UK are stunned with a captive-bolt pistol, but this is not permitted by the HFA because of the risk that it may kill the animal. The second position, which emerges from a derogation of the above legislation, allows EU member states to grant slaughterhouses that supply Muslim
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,