Starfish to starfish by the French zoologist de Blainville in 1830. It is derived from the Greek "aster", ἀστήρ (a star) and the Greek "eidos", εἶδος (form, likeness, appearance). The class Asteroidea belongs to the phylum Echinodermata. As well as the starfish, the echinoderms include sea urchins, sand dollars, brittle and basket stars, sea cucumbers and crinoids. The larvae of echinoderms have bilateral symmetry, but during metamorphosis this is replaced with radial symmetry, typically pentameric. Adult echinoderms are characterized by having a water vascular system with external tube feet and a calcareous endoskeleton consisting of ossicles connected by a mesh of
Animal Welfare Act 2006 nutrition and veterinary care. It outlaws tail docking of dogs for cosmetic reasons, with an exemption for "working" dogs, such as those used by the police, the armed forces or as service dogs. The corresponding Act for Scotland is the Animal Health and Welfare (Scotland) Act 2006. The Act is divided into several topics. Section 1 defines an "animal" as a vertebrate (other than a human) from the sub-phylum vertebrata of the phylum chordata. A "protected" animal is defined in s2 as one that is either commonly domesticated or one that is, at the time being, under the control of