Scientists extracted DNA from mummified cheetah remains and made a surprising discovery

Seven Ancient Cheetah Mummies Rewrite the Genetic History of Arabia’s Wild Cats

Earthguardiansonline.com – In the hyper-arid caves scattered around Arar, a city in Saudi Arabia’s northern reaches, researchers conducting routine wildlife surveys between 2022 and 2023 stumbled upon a find no one had anticipated: seven cheetahs preserved by natural mummification, their soft tissue and skeletal structures remarkably intact after centuries or millennia of desiccation. The discovery, made across five separate cave sites, immediately captured the attention of the National Center for Wildlife, which dispatched geneticists to extract what information the ancient remains could still yield.

A Genetic Surprise Hidden in Ancient Tissue

For decades, the prevailing assumption among zoologists was straightforward. The only cheetah subspecies ever documented in Saudi Arabia was the Asiatic cheetah, classified as Acinonyx jubatus venaticus. That lineage is now critically endangered, with a tiny surviving wild population confined to Iran. Across the broader Arabian Peninsula, cheetahs were declared locally extinct during the 1970s, and the species today occupies barely 9 percent of its historical range spanning Africa and parts of Asia.

Yet when scientists isolated complete genome sequences from three of the seven mummified individuals, the results defied that single-subspecies narrative. Two of the oldest specimens proved genetically aligned not with the Asiatic form but with Acinonyx jubatus hecki, the Northwest African cheetah. The finding, published in January in the journal Communications Earth & Environment, establishes that at least two distinct cheetah lineages once inhabited the Arabian Peninsula simultaneously or sequentially over thousands of years.

“It was highly surprising,” said Ahmed Al Boug, ecologist researcher and deputy CEO of the National Center for Wildlife in Saudi Arabia, and the study’s lead author. “This finding represents the first documented case of natural mummification in cheetahs, and first physical evidence that cheetah subspecies occurred in the Arabian Peninsula.”

“Moreover, cave use by cheetahs is extremely atypical behavior, making both the discovery itself and the context in which it occurred entirely unexpected,” Al Boug added in an email.

Why the Caves? Why the Mummification?

The team is still probing the behavioral question: why would cheetahs, open-country hunters by nature, enter and occupy enclosed cave spaces? Al Boug and colleagues have ruled out the simplest explanations — accidental entry or a terminal-life retreat for isolation. What they do attribute to the cave environment is the mummification process itself. The hyper-arid microclimate inside the rock shelters, combined with minimal microbial activity, created conditions under which the animals’ bodies desiccated rather than decomposed, preserving tissue that would otherwise have vanished within weeks.

Alongside the seven mummified cheetahs, surveyors catalogued skeletal remains of 54 additional cats within the same cave systems. Five of those skeletons were radiocarbon-dated; the oldest dates to roughly 4,000 years before present. The two mummies subjected to genetic analysis fall between approximately 130 and 1,870 years ago, placing their deaths within the medieval and early-modern periods. Al Boug indicated that the team intends to examine the remaining mummies and skeletal fragments to determine whether yet additional subspecies are represented.

Implications for Reintroduction and Conservation

The practical stakes of the discovery extend well beyond academic curiosity. Knowing which cheetah lineages historically thrived in the peninsula gives conservation planners a concrete genetic template for any future reintroduction program. Rather than importing animals from ecologically mismatched populations, managers can select individuals whose ancestry mirrors the lineages that once succeeded in Arabian habitats. The mummies themselves serve as proof that those lineages were not merely passing through but were established residents capable of sustained survival in the region.

That relevance is sharpened by a parallel breakthrough in captive breeding: two cheetah cubs were recently born via in-vitro fertilization, a first for the species. Combined with the genetic roadmap now provided by the ancient DNA, the IVF advance offers a tangible pathway for bolstering wild populations without depleting already-vulnerable source groups.

“This discovery is significant in that it represents the easternmost record of an African cheetah subspecies and demonstrates that northern Saudi Arabia was occupied by multiple cheetah lineages over millennia,” Al Boug stated. “Together, these findings refine our understanding of cheetah landscape use, clarify timelines of regional extirpation, and improve resolution on the subspecies historically present in this region.”

An External Perspective

Adrian Tordiffe, a veterinary wildlife specialist based in India and a lecturer at South Africa’s University of Pretoria, who was not involved in the study, called the dating results particularly striking. Some of the cheetah remains are only about a century old, meaning these cats persisted in Saudi Arabia far more recently than the conservation community had assumed.

“Even more striking is that the remains show different subspecies of cheetahs lived there at different times,” Tordiffe said in an email. “This tells us the Arabian Peninsula was once an important natural bridge for cheetahs, not an ecological dead end.”

Tordiffe emphasized that the discovery hands conservationists clear, physical evidence of which species occupied the area in a not-so-distant past. Because the genetic identities of those historical populations are now known, any reintroduction effort can be calibrated to ecologically appropriate lineages rather than relying on cheetahs drawn from entirely different geographic populations whose adaptations may not match Arabian terrain, prey structure, or climatic extremes.

First-Of-Its-Kind Extraction

The technical achievement underlying the study deserves separate note. Extracting complete genome sequences from naturally mummified cheetahs — or, more broadly, from any naturally mummified large feline — had never been accomplished before this work. The desiccated tissue, while preserving morphology, typically degrades DNA to fragments too short for whole-genome assembly. The team’s success in recovering usable sequences from three of the seven specimens opens a methodological door for future paleogenomic work on other arid-preserved carnivore remains across the Middle East and North Africa.

As the remaining mummies and skeletal fragments await further analysis, the Arar caves continue to yield information that reshapes the regional biogeography of one of the world’s most threatened big cats. What began as an unplanned encounter during a routine survey has become, in the words of the researchers themselves, an entirely unexpected chapter in the story of cheetahs and the Arabian landscape.