Here's why:
* Anatomy: Tigers have a different skeletal structure than humans. Their hind legs are not designed for bipedal locomotion. Their legs are powerful for running and jumping, but their spine and hips aren't built to support their weight for extended periods in an upright position.
* Balance: Tigers lack the balance and coordination to walk on their hind legs. They rely on their powerful forelegs for stability and balance while moving.
* Purpose: While tigers can stand on their hind legs, they usually do so to gain a better view of their surroundings, reach higher branches, or intimidate rivals.
So, while they can stand on their back legs, they don't have the physical capabilities to walk on them.