Uchiha is a clan with the Sharingan bloodline power that takes multiple forms based on the amount of control the user has.
While meant to further the breed's bloodline and help eliminate genetic problems, the agreement is also attentive to the fact the dogs must be raised in an environment suited to their temperament and needs.
This bloodline enhanced the breed's retrieving skills and love of water.
At least their bloodline wouldn't end.
He began to believe Kris was right about the bloodline of his mate's family.