What pigment colors animals' skin, hair, eyes and fur?

Angostura is a brand of which aromatic ingredient for cocktails? The islands of Anguilla and Antigua lie in which sea? The Animal and Plant Health Inspection Service is part of which U.S. cabinet department? Which animal appears on the Victoria Cross, Britain's highest award for valor? Which animal is the symbol of the political party that held its convention in New York City in August 2004? Which gas do animals produce and exhale as a waste product of respiration? Animals first went aloft in 1783 when the Montgolfier brothers sent a sheep, a duck and a rooster up in what? Which animals are the "E" in the fraternal organization BPOE?