What is the main defining characteristic of the pudu deer in the Patagonia region?

The pudu deer is primarily defined by its size, making it one of the smallest deer species in the world. These diminutive deer stand only about 12 to 16 inches tall at the shoulder and weigh approximately 50 pounds. This small stature allows the pudu to navigate effectively through the dense underbrush of its native temperate forest habitat in Patagonia, where it resides. Their size aids them in avoiding predators and accessing food sources that larger deer may not be able to reach, further contributing to their unique ecological niche in the region.

The other characteristics mentioned, such as a zigzag running pattern, exceptional climbing abilities, or bright coloration, do not accurately define the pudu deer. While many animals may display unique behaviors or adaptations, the distinctive feature of the pudu is its small size, which is crucial for its survival in the challenging environments of Patagonia.