What kind of cat did the Ragdoll cat cross?

The Ragdoll cat was originally bred in 1963 by Mrs. Ann Baker in the United States with a pure white long-haired cat and a pure black long-haired cat similar to the Maine cat, and it eventually took five years to breed a cat with the basic characteristics of the Ragdoll cat. After years of development, the Ragdoll cat has slowly become popular around the world. Cats, belonging to the feline family, are divided into domestic cats and wild cats, and are widely used as pets in homes around the world. The ancestor of the domestic cat is presumed to have originated from the desert cat of ancient Egypt and the Persian cat of Persia, which has been domesticated by humans for 3,500 years (but not completely domesticated like the dog). The average cat: round head, short face, five fingers on the forelimbs, four toes on the hindlimbs, sharp and curved claws at the end of the toes, and claws that can be retracted. Nocturnal. Hunts other animals by ambush, mostly able to climb up trees. Cats have fatty meat pads on the bottom of the toes to avoid making noise when walking, and will not scare away rats when hunting. The claws are in a contracted state when traveling to prevent the claws from being dulled, and will be extended when hunting mice and climbing rocks.