What function does the long, slender tail serve while the leopard lizard is sprinting bipedally?

Answer

As a counterbalance for dynamic stability

When balancing on two feet during a swift dash, the lizard utilizes its long tail to maintain dynamic stability.

What function does the long, slender tail serve while the leopard lizard is sprinting bipedally?
animalreptilespeedlocomotionleopard lizard