Common Shrew
Despite their tiny size, these mammals utilize basic echolocation. Common shrews emit high-pitched squeaks between 30-60 kHz as they scurry through leaf litter. Their sounds help them navigate tunnels and locate insects in low-visibility conditions. They complement their keen sense of smell with echolocation. The combination proves particularly useful during rainy nights when scent trails wash away. They use sound primarily as a supplementary sense rather than their primary navigation tool.