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The American Ringtail Cat is a new experimental cat breed that started with a California cat named Solomon in 1998. Owner Susan Manley started a breeding program to reproduce his unique curled tail, which she had also noted in other feral cats in northern California. This genetic mutation seems to have no ill health effects associated with it. The cats with curled tails were bred with Ragdoll cats and American Shorthair cats. In 2005 The International Cat Association, gave this new breed "Registration Only" status.
Video American Ringtail
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Source of article : Wikipedia