Before looking for outcross it is important to understand the words foundation, part foundation and outcross. A foundation cat we call a cat from newer lines that are 100 % different from the ones in a common pedigree. A part foundation cat is a cat with a certain amount of foundation mixed with a pedigreed cat from common lines. Part foundation Maine Coons can vary a great deal in their foundation content. Most times, cats in higher generations have less foundation content than cats in lower generations unless the foundation breeder manages to keep up high foundation numbers for several generations. Part foundation cats and even some full foundation cats can already have a pedigree with several generations. An outcrossed cat can be anything from foundation to part foundation to a cat with a regular pedigree. It all depends on what we are outcrossing to. So, the word outcross can be misleading as well. A cat can be a half-sibling to one cat and a total outcross to another. Some people consider a cat with a full pedigree, but a low Clone or Heidi Ho content a sufficient outcross to other pedigreed cats. For an explanation of the words Clones, Top Five, Top Three, Top Two and Heidi Ho please visit the Maine Coon Heritage Site http://bowen1.home.mindspring.com/mchs/home.htm on the internet). Others feel that every cat with a pedigree from show lines needs a part foundation cat to get sufficient results regarding health.