One. The Sopwith Camel got that name because of a slight hump behind the engine cowl that acted as a fairing over a portion of the 2 machine guns.
Sopwith F.1 Camel was one of the fighter aircraft built by the British company Sopwith that was owned by Sir Thomas Octave Murdoch Sopwith, C.B.E.. This aircraft was a derivation of the Sopwith...
probably 2. if it is true to its name. bi-wing (bi is two) :D
17 million camels world wide
8 bactrian camels and 11 dromedaries