Cats' whiskers are very important sensory tools for them. They are deeply rooted in their skin and are connected to nerves, providing cats with valuable information about their surroundings. Whiskers help cats navigate in the dark, judge whether they can fit through a space, and detect changes in air currents to sense nearby objects. They also use their whiskers to communicate their mood and intentions to other animals. In short, whiskers are crucial for a cat's spatial awareness and overall well-being.