Currently , several registration organizations are active , all of which have their own standards , but the most commonly accepted are the United Kennel Club and the United Kennel Club International .
The United Kennel Club International still only recognizes United Kennel Club as a variation of the Rat Terrier .
Currently , several registration organizations are active , all of which have their own standards , but the most commonly accepted are the United Kennel Club and the United Kennel Club International , although the UKCI still only recognizes them as a variation of the Rat Terrier .