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basking shark
(Encyclopedia) basking shark, large, plankton-feeding shark, Cetorhinus maximus, inhabiting many oceans of the world, especially in temperate regions. Found singly or in schools of up to 100, it…Siberian husky
(Encyclopedia) Siberian husky, breed of medium-sized, muscular working dog whose origins date back thousands of years in Siberia. It stands from 20 to 231&fslsh;2 in. (50.8–59.7 cm) high at the…slate
(Encyclopedia) slate, fine-grained rock formed when sedimentary rocks such as shale are metamorphosed by great pressure. Slate splits into perfectly cleaved, broad thin layers; this…tanuki
(Encyclopedia) tanuki or raccoon dog, omnivorous mammal, Nyctereutes Procyonoides, of the dog family, native to the forests of E Asia. The tanuki is similar in appearance to a dog but has black,…graphite
(Encyclopedia) graphitegraphitegrăfˈīt [key], an allotropic form of carbon, known also as plumbago and black lead. It is dark gray or black, crystalline (often in the form of slippery scales), greasy…guinea fowl
(Encyclopedia) guinea fowlguinea fowlgĭnˈē [key], common name for any of the seven species of gallinaceous birds of the family Numididae, native to Africa and Madagascar. The helmeted guinea fowl,…goose
(Encyclopedia) goose, common name for large wild and domesticated swimming birds related to the duck and the swan. Strictly speaking, the term goose is applied to the female and gander to the male.…hydra, in zoology
(Encyclopedia) hydrahydrahīˈdrə [key], common name for freshwater organisms in the phylum Cnidaria, which includes jellyfish, sea anemones, and corals. Hydras are widely distributed in lakes, ponds,…jumping mouse
(Encyclopedia) jumping mouse, rodent slightly larger than the common mouse, found in North America and N Asia, also called the kangaroo mouse. Its long hind legs and tail enable it to leap distances…opal
(Encyclopedia) opalopalōˈpəl [key], a mineral consisting of poorly crystalline to amorphous silica, SiO2·nH2O; the water content is quite variable but usually ranges from 3% to 10%. Common opal is…