Who Discovered Red Pandas and When Were They Found?

The red panda was first described for Western science in the early nineteenth century by two naturalists who each claimed priority. Major General Thomas Hardwicke, a British officer and naturalist stationed in India, presented a paper on the animal to the Linnean Society of London in 1821, but bureaucratic delays in publishing gave the credit to French zoologist Frédéric Cuvier, who formally named the species Ailurus fulgens in 1825. The tangled story behind that naming dispute reveals much about how colonial-era natural history worked, and the red panda’s scientific journey only got stranger from there.

Hardwicke’s Encounter and Cuvier’s Publication

Thomas Hardwicke first learned of the red panda around 1818 through specimens collected in the eastern Himalayas. He prepared a scientific description accompanied by a detailed watercolor painting and sent both from Bengal to the Linnean Society of London in 1820.¹ The Linnean Society, however, was slow to publish. Meanwhile, French naturalist Alfred Duvaucel had independently collected red panda specimens in the same region and sent them to the Muséum national d’Histoire naturelle in Paris. His specimens ended up in the hands of Frédéric Cuvier, who used them as the basis for the first formal scientific description of the species, published in 1825. That publication beat Hardwicke’s by two years.²

Under the rules of zoological naming, the first published description wins, regardless of who saw the animal first. Cuvier’s 1825 paper established the binomial name Ailurus fulgens, meaning “shining cat,” and that name has stuck. Hardwicke is generally acknowledged as having encountered the species earlier, but the formal credit belongs to Cuvier. The episode was not unusual for the era. Naturalists stationed in remote colonial outposts frequently lost priority to colleagues in European capitals who had faster access to publishers and printing presses.

The Animal Was Known Long Before Western Science Arrived

The framing of “discovery” in a story like this is worth pausing on. Red pandas were obviously well known to the people living alongside them in Nepal, Bhutan, northern Myanmar, and the mountain forests of southwestern China for centuries before any European naturalist wrote a formal description. Local names existed in multiple languages across the Himalayas. The Nepali word nigalya ponya, which roughly translates to “bamboo eater,” is thought by some to be the etymological root of the English word “panda,” though the exact origin remains debated.

Indigenous communities had their own relationships with the animal that went beyond naming. Shamans of the Northern Magar tribe in western Nepal’s Dhaulagiri region, for instance, use the skin and fur of the red panda in their ritual dress. They consider the red panda a protective animal that guards the wearer against attacks by aggressive spirits, and its body is hung on the shaman’s back during dangerous healing rituals. Neighboring communities hold similar beliefs.³ Calling Hardwicke or Cuvier the “discoverer” of the red panda erases this longer cultural record. What they discovered was how to fit the animal into European taxonomy.

A Century of Taxonomic Confusion

Once Cuvier named the red panda, the obvious question was: what is it related to? That question turned out to be one of the most stubborn puzzles in mammalian classification. The red panda looks vaguely like a raccoon, eats bamboo like a giant panda, and is classified as a carnivore despite being almost entirely vegetarian. For more than a hundred years, researchers shuffled it between the raccoon family, the bear family, and a standalone category of its own.

Early molecular studies in the 1990s tried to settle the debate and initially placed the red panda as an early branch within the raccoon family (Procyonidae), while confirming that the giant panda belongs firmly within the bear family (Ursidae).⁴ But later analyses with more genetic data revised the picture further. The red panda is now classified in its own distinct family, Ailuridae, and is understood to be the closest living relative of the group that includes raccoons (Procyonidae) and weasels (Mustelidae). Together, these families form the superfamily Musteloidea, which is in turn the sister group to the seals, sea lions, and walruses.⁵

So the red panda is not a bear and not a raccoon. It sits on its own branch, the sole surviving member of an ancient family. That kind of evolutionary isolation is part of what makes it scientifically interesting and also makes it harder to conserve, since there is no close relative to serve as a genetic backup.

Actually Two Species, Not One

For most of the time since Cuvier’s description, scientists treated all red pandas as a single species with perhaps some geographic variation. That changed in 2020, when a landmark genomic study analyzed 65 whole genomes along with mitochondrial and Y-chromosome data from red pandas across their range. The results showed clear genetic divergence between two groups: the Himalayan red panda (Ailurus fulgens) in Nepal, India, Bhutan, and northern Myanmar, and the Chinese red panda (Ailurus styani) in Yunnan and Sichuan, China. The genetic split was supported across all three types of markers, and the study also corrected previous assumptions about where exactly the boundary between the two species falls.⁶

This matters enormously for conservation. If the two populations are genetically distinct species rather than interchangeable subtypes, mixing them in captive breeding programs could be counterproductive. And each species faces its own separate threats: the Himalayan red panda has a smaller estimated population, meaning it may need more urgent protection than the Chinese red panda. Population bottleneck data from the same study suggested that both species have been declining for a long time, well before modern habitat loss accelerated the trend.

The False Thumb and What Fossils Reveal

One of the most charming things about red pandas is the “false thumb” on each front paw, an enlarged wrist bone (the radial sesamoid) that functions like a stubby opposable digit. Giant pandas have one too, and for years researchers assumed both animals evolved the structure for the same reason: gripping bamboo stalks. The real story turned out to be more complicated and more interesting.

The discovery of previously unknown skeletal remains of Simocyon batalleri, a Miocene-era fossil relative of the red panda found in Spain, showed that this ancient carnivore already had a false thumb millions of years ago, long before the red panda lineage adopted a bamboo diet. The false thumb of the red panda and its fossil relative was probably inherited from a common ancestor that used it for climbing, not for eating. The giant panda evolved its false thumb independently for bamboo manipulation, making the similarity between the two animals’ thumbs one of the most striking cases of convergent evolution among vertebrates.⁷

Biomechanical tests have added further support. When researchers built a mechanical model of a red panda paw and tested its grip on rods of various diameters with interchangeable thumb lengths, they found that the red panda’s actual thumb length falls just below the optimum for gripping thin rods. But the data showed that shorter thumbs performed better on larger-diameter objects, consistent with grasping tree branches rather than slender bamboo shoots. The conclusion: the thumb is fundamentally a climbing adaptation that the red panda later repurposed for food handling.⁸

The fossil record for the Ailuridae family has historically been frustrating: sparse and fragmentary. The red panda’s skull and teeth are so highly specialized for its plant-based diet that without fossils showing what earlier ailurids looked like, researchers struggled to reconstruct the family’s original biology. Recent years have seen a dramatic improvement in the fossil record, filling in some of the gaps.⁹

How a Carnivore Survives on Bamboo

The red panda’s digestive system still looks like that of a carnivore. It has a simple stomach and short intestinal tract, with none of the fermentation chambers that herbivores like cows or horses use to break down plant material. Yet it subsists almost entirely on bamboo leaves and shoots, supplemented by occasional fruit, insects, and eggs. Understanding how it manages this feat has become a rich area of molecular research.

Comparative studies of liver gene activity between red pandas, giant pandas, and polar bears (used as a carnivorous comparison) have revealed that genes involved in carbohydrate metabolism and cholesterol production show higher activity in both panda species, while genes related to fat digestion and fatty acid processing show lower activity. The pattern suggests that both the red panda and the giant panda have independently evolved similar metabolic tweaks to extract enough nutrition from bamboo, driven by their shared diet rather than their shared ancestry. The giant panda is actually more closely related to the polar bear than to the red panda, so the metabolic similarities between the two bamboo eaters reflect convergent evolution rather than inheritance.¹⁰

Even the transition from milk to bamboo within an individual red panda’s lifetime involves specialized regulation. Research on DNA methylation in red panda cubs as they wean off milk and begin eating bamboo has shown that chemical tags on their DNA switch specific digestive and metabolic genes on or off during the transition. This epigenetic regulation helps explain how an animal with a carnivore’s gut can shift to processing plant material as it matures.¹¹

The First Red Pandas in Western Zoos

Despite being described scientifically in 1825, it took another four decades before a living red panda arrived at a zoo outside its native range. The first known captive specimen reached the London Zoo on May 22, 1869. It was the sole survivor of a group of three animals collected near Darjeeling, and it lived only until December of that year. A second individual arrived in 1876 and survived until 1881. Apart from a single animal recorded at the Calcutta Zoo in 1877, no other red pandas were kept in captivity until the Philadelphia Zoo imported the first one to the United States in 1906.¹²

Early captive mortality was high, and the species proved difficult to keep. Red pandas are sensitive to heat, prone to stress in confined enclosures, and susceptible to a range of infections. Today, captive breeding programs are far more sophisticated, coordinated internationally through studbooks that track genetics. The recent confirmation of two separate species has added urgency to ensuring breeding programs do not inadvertently hybridize Himalayan and Chinese red pandas, which could dilute the genetic distinctiveness of each.

Trade, Trapping, and Legal Protection

Red pandas have been captured and traded since well before their formal scientific description. Historically they were trapped alive for zoo exhibitions and hunted for their fur, which was fashioned into hats, clothing, and rugs. Since 1995, all international commercial trade in red pandas and their parts has been strictly prohibited under CITES (the Convention on International Trade in Endangered Species). Research into the scale of the trade only began in earnest in the late 2010s and found that both domestic and international trade continue at low levels, including for live animals and fur. Given the recent discovery of two distinct species and evidence that both have experienced long-term population declines, even low-level trade could meaningfully harm remaining wild populations.¹³

Parasites and Wild Health Challenges

Field surveys of wild red panda feces in Nepal have found strikingly high rates of intestinal parasites. One study across multiple sites found parasites in about 91% of samples, with hookworm being the most common infection by far, appearing in roughly 70% of samples. Other parasites included amoebic protozoa and roundworms.¹⁴ A more recent study in community forests of eastern Nepal found a somewhat lower prevalence, around two-thirds of samples, but confirmed that mixed infections with multiple parasite species are common.¹⁵

Red pandas also serve as intermediate hosts for Toxoplasma gondii, the same parasite responsible for toxoplasmosis in humans. Researchers have found tissue cysts in the muscles and diaphragms of red pandas that tested positive for T. gondii antibodies, confirming the red panda’s role in the parasite’s life cycle.¹⁶ These parasite burdens are relevant to conservation because they compound the pressures of habitat loss and low population density. Animals already weakened by heavy infections are less likely to reproduce successfully or survive periods of environmental stress, and the parasite issue becomes harder to manage as forest fragments shrink and red panda populations become more concentrated in smaller areas.