Horse blanket rear, but usually it has no other straps or attachments. It is intended to be used on a horse while the animal is being led or held by a person, and not left on an unattended horse. In windy weather, a loose surcingle may be added to prevent the cooler from blowing completely off. A traditionally-shaped blanket of loosely crocheted cotton, called an "anti-sweat sheet", is used to absorb moisture. Often used alone to wick moisture from the surface of the horse, if placed under a cooler, it is removed when it becomes wet. A "barrier blanket" is sometimes used
Animal testing on invertebrates Animal testing on invertebrates Most animal testing involves invertebrates, especially "Drosophila melanogaster", a fruit fly, and "Caenorhabditis elegans", a nematode. These animals offer scientists many advantages over vertebrates, including their short life cycle, simple anatomy and the ease with which large numbers of individuals may be studied. Invertebrates are often cost-effective, as thousands of flies or nematodes can be housed in a single room. With the exception of some cephalopods, invertebrate species are not protected under most animal research legislation, and therefore the total number of invertebrates used remains unknown. Research on invertebrates is the foundation for current understanding of