What is the evolutionary purpose of the WSL's tightly curled tail carried over the back?

Answer

Prevents heat loss from the tip and avoids damage during dense brush work

The physical manifestations of the West Siberian Laika's evolution are directly linked to protection in harsh northern environments. The tail, characteristically thick at the base and carried tightly curled over the back, serves vital practical functions. Primarily, carrying the tail curled helps prevent excessive heat loss from the tip in extreme cold. Furthermore, keeping the tail held close to the body helps ensure it is less likely to become frozen or damaged while the dog navigates densely packed brush and forested terrain during the hunt.

What is the evolutionary purpose of the WSL's tightly curled tail carried over the back?
evolutionDogbreedCanineWest Siberian Laika