My First Tennessee Rex cat Hecktar. Hecktar is sire to my first Tennessee Rex carrier litters. The natural mutation breed starts from an individual cat or group of cats, in this case a pair of sibling males discovered in Tennessee.The most important thing in starting a new breed is genetic diversity, so rather than making more Satin curls, we focus on producing genetically diverse carriers of the mutation. The carriers can be paired to make Satin r-Rex kittens , and the process then repeats until a solid gene pool is created. Then the breeding of 100% Tennessee Satin Rex cats can begin. Domestic out crosses will be allowed in the breeding pool for many years to ensure it is a healthy breed.