How do snow leopards stay warm in the winter?

Snow leopards took advantage of a niche in their environment and evolved to survive in high, rugged mountains of Central Asia. They have incredibly large lungs, huge paws for balance, and a rosette spot pattern that allows them to blend into the snow covered cliff faces perfectly. Their nose is the only part of their body not covered in thick fur, and in the coldest weather they wrap their tail around their body and cover it up to stay warm.