What makes a cat a Ragdoll?

What makes a cat a Ragdoll? They are probably the result of a mating between a white Persian cat queen (female) and a Birman or Birman-type tom. When picked up the cat becomes very relaxed and is as floppy as the ragdoll from which it takes its name.

They are probably the result of a mating between a white Persian cat queen (female) and a Birman or Birman-type tom. When picked up the cat becomes very relaxed and is as floppy as the ragdoll from which it takes its name.