1) Riki Tiki Tavi, after falling into a tub of yellowish-green paint. Chartreuse Mongoose (oomis1105)
2) Young 19th-century general, bragging that he would easily defeat the Lakota and Cheyenne braves. Custer Bluster (ronrsr, oomis1105)
3) Politely suppress a digestive noise. Belch Squelch (ronrsr, oomis1105)
4) An unsavory Englishman. Slimy Limey (ronrsr, oomis1105)
5) The official flag of the Acme Monkey-Wrench Company. Spanner Banner (haifagirl)
6) The 37th president’s prey on a fox hunt. Nixon Vixen* (haifagirl)
8) A Minnesota college athlete, who moonlights as a limo driver. Gopher Chaufer (haifagirl)
9) A former mouth-doctor, now being trained as an electrician. Apprenticed Dentist (ronrsr)
12) An extraordinarily plain milk container. Spartan Carton (ronrsr, oomis1105)
[and more obvious] answer)
14) A type of pliers in a barber shop (two sets of hyphenated words). Clip-joint Slip-joint (oomis1105)