Quoting Kara-lynn:" note: you will find sites that list these dogs as a 'breed' but they are not a registered breed of dog, ... [snip!] ... without papers, if I could go to the local shelter and get a mutt for much less, and still end up with a wonderful dog!!! "
I specifically described cur as a type of dog. But if you look it up, there are different breeds of cur.
Cur as slang refers to a type of random-bred, or mixed-breed dog. This article deals with Cur as a functional grouping of pure breeds.
And then there is a list of the breeds
that belong to the cur group of dogs (catahoula, black mouth, mountain, etc). Just because a breed isn't recognized in kennel clubs doesn't mean it isn't a breed. Its because the lineage can't be traced back a certain number of years to determine how the breed was formed. If pugs and poodles are bred together for first generations and then the offspring are bred together over the next 100 years or so to the point that a standard can be determined, then poogles will become a recognized breed. AKC, CKC and other clubs define breeds as having a standard that they can compare to each other with certain ideals, basically so that they can have dog shows. They don't even recognize all of the same breeds. CKC recognizes breeds that AKC doesn't, so the argument that a dog breed isn't a breed unless it's recognized by a kennel club isn't valid, since they don't even recognize all the same breeds.