Sled dogs have counter current circulation - which means that the cool blood from the feet gets reheated before getting back to the body core.

A. True

B. False

Sled dogs have counter current circulation - which means that the cool blood from the feet gets reheated before getting back to the body core.

This is true.

When warm blood arrives in the paws of these dogs through the arteries, the heat is transferred to the venules, ensuring that the blood has been warmed up before it returns to the rest of the body.