Winter Whites are literally built for the cold. They have a gene called the UCPI gene that stops them from needing to shiver to keep warm. They change their coats in the winter, thicker fur and changing coat color.
Winter Whites are literally built for the cold. They have a gene called the UCPI gene that stops them from needing to shiver to keep warm. They change their coats in the winter, thicker fur and changing coat color.