Simplify the following text for a Grade 6 native English-speaking person.
Original: Ross registered the breed with the Governing Council of the Cat Fancy ( GCCF ) in Great Britain in 1966 and started to breed Scottish Fold kittens with the help of geneticist Pat Turner .
Simplified: Ross registered the breed with the Governing Council of the Cat Fancy in Great Britain . He started to breed Scottish Fold kittens with the help of Pat Turner .