Secrets of the mysterious 'ghost dogs' of the Amazon have been revealed after rare sightings and nearly 25 years of research. The short-eared dog, scientifically known as Atelocynus microtis, has long been regarded as one of Latin America's most elusive carnivores. Its secretive nature, acute hearing, and powerful sense of smell allowed it to avoid human contact for decades, leaving researchers with only a handful of confirmed sightings.
However, a study published in the journal Neotropical Biology and Conservation provides new insights into the species through extensive camera-trap monitoring in Bolivia and Peru. Advances in remote sensing technology have transformed understanding of the animal.
Breakthrough Discovery
According to lead author Robert Wallace, the breakthrough came when scientists first photographed the species using camera traps in 2001. Recognizing the significance, researchers began compiling data from across the Amazon basin. Over two decades, they gathered 500 distribution records in Bolivia and conducted 34 intensive camera-trap surveys in lowland regions of Bolivia and Peru, particularly within the Greater Madidi-Tambopata and Llanos de Moxos biocultural landscapes.
The project produced 594 independent photographic records, representing the largest collection of confirmed short-eared dog observations anywhere within the species' range. Wallace described the research as 'a wonderful example of how conservation technology and remote sensing can provide substantial data on one of the least known species of the Amazonian rainforests'.
Physical Characteristics
Images captured by camera traps revealed distinctive features, including a dark coat ranging from blackish-grey to reddish-brown, a large head, very small rounded ears, short legs, and a long bushy tail. Researchers also found the species possesses partially webbed paws, a feature not seen in any other Amazonian wild dog.
Surprising Abundance
Yet the most surprising finding was the animal's population numbers. 'The most surprising aspect of the results was that despite being an almost mythical beast, short-eared dogs are much more abundant than we had imagined,' said Wallace. While still relatively uncommon, capture rates and population estimates suggest around 15 individuals per 100 square kilometers in suitable habitat.
The study found short-eared dogs are more numerous than larger predators like the jaguar but less abundant than medium-sized carnivores such as the ocelot. The species appears to be more active in the morning, with highest activity levels between 6am and midday.
Habitat Preferences
Researchers found the short-eared dog is closely tied to intact rainforest habitats, strongly favoring terra firme forests — elevated areas away from rivers — which may explain why it has remained hidden from human observers. The study concludes that protecting these habitats is critical for the species' long-term survival.
Short-eared dogs were significantly more abundant in national protected areas and Indigenous territories that overlap with protected zones than in unprotected landscapes. 'The most important management strategy is the protection of Amazonian forest canopy, for which the creation and effective management of protected areas is the most important element, in combination with the sustainable management of Indigenous territories,' the researchers noted.
Although the short-eared dog appears to be thriving in some of the most remote forests of Bolivia and Peru, scientists say continued conservation efforts will be essential to ensure the species remains secure in the years ahead.
