Meerkats are small mammals that live in groups called mobs and are known for their alertness and ability to detect danger. They have several senses that help them detect threats, including sight, hearing, smell, and touch. Meerkats use their eyesight to scan the horizon for predators or other potential dangers. Their large ears allow them to hear distant sounds, such as the rustling of leaves or the footsteps of a lurking predator. They also have a keen sense of smell that helps them detect danger from far away. Finally, they use their whiskers and paws to feel for vibrations in the ground, which can indicate the presence of an approaching predator.