Geckos, a diverse group of lizards, are often a source of curiosity due to their unique vocalizations. While they do not bark like a dog, many gecko species produce a surprising array of sounds. These vocalizations can sometimes be described as “bark-like” due to their abrupt, repetitive nature or volume. The name “gecko” itself is believed to be derived from the distinctive sounds some of these lizards make.
The True Sounds of Geckos
Geckos possess a vocal communication system, uncommon among lizards, and produce a variety of sounds. Their repertoire includes chirps, clicks, squeaks, growls, croaks, and hisses. Some species emit bark-like sounds, distinct from canine barks but startling due to their volume or repetitive pattern. These sounds can also include distress calls or scream-like vocalizations when a gecko feels threatened. Some gecko sounds may even be inaudible to human ears.
Why Geckos Vocalize
Gecko vocalizations serve various purposes in their social interactions and survival strategies. A common reason for sound production is territorial defense, where male geckos vocalize to warn off rivals and assert their claim over an area. These sounds are also used to attract mates, with males producing specific calls to advertise their presence and availability. Vocalizations also act as alarm calls when a gecko feels threatened or is in distress, serving as a warning to other geckos or to deter a potential predator.
Common Gecko Species and Their Sounds
The vocalizations of geckos vary significantly among different species.
The Tokay gecko is renowned for its loud, distinctive “to-kay” call, which males use to attract females and establish territory. They also produce cackles and, in the case of females, a higher-pitched “tek-tek-tek” sound.
Leopard geckos, while generally less vocal, make chirping and squeaking sounds often associated with contentment or during mating rituals. They also produce clicks when feeling uncomfortable or stressed, and may bark or even scream if they perceive a significant threat.
Common house geckos are quite vocal, producing soft chirping or “chapping” calls. These sounds are used for territorial warnings and to attract mates. The thick-tailed gecko, native to Australia, emits a sharp yelp or squeak when threatened, which some describe as bark-like. Similarly, the African barking gecko is known for its high-pitched whistling or chirping, which sounds bird-like and is primarily for territorial announcements.