Hedgehog
These prickly garden visitors produce faint ultrasonic clicks between 20-40 kHz while foraging. Hedgehogs primarily use smell and hearing to find food. Their basic echolocation supplements these other senses. They navigate through dense vegetation using a combination of all available sensory information. Their clicking sounds help them locate insects and avoid obstacles in darkness. This sensory technique remains relatively simple compared to specialized echolocators like bats and dolphins.