A "crash" is a group of which large horned mammals?

Which Hanna-Barbera pair, one in a cowboy hat and one in a sombrero, debuted in 1959? Which U.S. president had the Secret Service code name "Rawhide"? A cow's stomach has how many compartments? What is a crack in the Earth's crust along which rocks have moved called? Which Old West slang term for a hanging also sounds like a formal-wear gathering? A craze for which flower developed in Holland in 1634, with single bulbs fetching extraordinary prices? A creel is a basket for carrying what? Cricetus cricetus is the scientific name for which rodent with large cheek pouches?