there are numerous definitions of CURS. I read on a site that claimed to have the "history" of the cur dogs. it originated in the European area, where only the lords of the land could afford pure blooded dogs. the commoner couldn't afford or own them and the dogs they did own had to have a piece of wood tied around their neck with the owners name and the tails had to be curtailed or "cut off/bobbed" to show the dogs were not of pure blood. if the dog/s were caught with out their name tag and the owner was found, they would be imprisoned for a set determined amount of time specified by the king or local magistrate. as the people traveled the lands and spanned the oceans, the needs of their dogs changed, if the people came across a dog of a specific need, the wanting would try and buy or barter the dog from their owner or ask to breed to the dog with acquiring traits.
here is another definition of cur:
The derivation of the word "cur" dates from the 13th century. It is thought to be short for the Middle English "curdogge", which derives from the word "curren", meaning "to growl".[1] According to the Dictionary of True Etymologies the original root of the word may be Germanic, possibly from the Old Norse "kurra" meaning "to grumble".[2] If so, the word may be onomatopoeic. Cur and the word "mutt" mean almost the same thing. A mutt is also a mixed breed or stray dog.
here is the link, im not copying and pasting the stuff, yaw can look it up urself.
