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Thermal Sphynx is a new term to me. Granted I am still strying to catch up on all the developments and changes with the breed. But I know just the right bunch of people who can help me! 
Is it a term for kitties changing color with the seasons? How is this passed off to offspring? How do you know if a kitten is a thermal? How do you register the color on TICA and CFA papers? Are there health concerns associated with them?
Thanks for helping an old dog learn something new.

Is it a term for kitties changing color with the seasons? How is this passed off to offspring? How do you know if a kitten is a thermal? How do you register the color on TICA and CFA papers? Are there health concerns associated with them?
Thanks for helping an old dog learn something new.