Musk, a substance with a strong, penetrating odor. It is obtained from a large abdominal gland of the male musk deer. Musk activates sperm cells during the mating season and its scent attracts females. Musk is an oily brownish liquid when fresh, a grainy powder when dried. Diluted with alcohol, it is used in perfumes to slow evaporation. The characteristic odor of musk is caused by a substance called muscone, or muskone, which can be synthetically produced. Other animals, such as the muskrat, and some plants yield musklike substances.
Cahow, or Bermuda Petrel is an ocean bird that nests only in Bermuda. Like other petrels, the bird lives at sea for seven or eight months, returning to shore to nest in burrows and raise its young.
Gallimimus ("chicken mimic") was the largest of the ornithomimids (the "ostrich dinosaurs") known. It has been found only in the Late Cretaceous Nemegt Formation of Mongolia. Learn more about the Gallimimus and other Late Cretaceous dinosaurs.