It is actually a combination of both whiskers and tail, along with other senses and physical features, that gives a cat its balance.
Whiskers: Highly sensitive to touch and vibrations. They help cats navigate in the dark, detect air currents, and sense nearby objects, aiding in obstacle avoidance and distance judgment.
Tail: Acts as a counterweight during jumps, turns, and walks. It also communicates mood.
Other contributing factors:
* Inner ear (vestibular system)
* Excellent eyesight
* Flexible spine and strong leg muscles
It is a complex interplay of several senses and physical features that makes cats such graceful and agile creatures.