A pedigree cat means that the cat has a clear pedigree and a pedigree certificate. A cat's bloodline refers to its bloodline, just like a human family tree, which indicates which branch it is descended from. This way the pet owner can know the cat's parents and ancestors, which is helpful for the owner to understand the specific situation of the cat. Lineage is also divided into single lineage and double lineage. Single lineage means that only one parent has a lineage certificate, while double lineage means that both parents have bloodline certificates. Moreover, such pedigree cats will have pedigree certificates. Generally, only formal catteries will sell cats with pedigree certificates, so they will be more expensive.