Slender-horned Gazelle

Mammals > Even-Toed Ungulates

The Slender-horned Gazelle (Gazella leptoceros), historically known as the Rhim, is an exceptionally pale, ghost-like desert antelope native to the deepest sand dunes of the Sahara Desert. Exquisitely adapted to survive in one of the most hyper-arid, scorched...

Pygmy Hog

Mammals > Even-Toed Ungulates

The Pygmy Hog (Porcula salvania) is an extraordinarily petite and critically endangered suid holding the distinction of being the smallest wild pig on Earth. Standing barely ten inches high at the shoulder, this reclusive grassland specialist represents the sole...

Dwarf Blue Sheep

Mammals > Even-Toed Ungulates

The Dwarf Blue Sheep (Pseudois schaeferi), or Dwarf Bharal, is a rare and diminutive mountain caprid confined exclusively to the steep, arid river gorges of the Upper Yangtze River in southwestern China. Morphotaxonomically distinct from the widespread Greater Bharal,...

Mountain Anoa

Mammals > Even-Toed Ungulates

The Mountain Anoa (Bubalus quarlesi) is an extraordinarily petite, enigmatic forest ox found only in the rugged mountain wilderness of Sulawesi, Indonesia. Standing barely 70 centimeters at the shoulder, it shares the title of the world’s smallest wild cattle...

Tamaraw

Mammals > Even-Toed Ungulates

The Tamaraw (Bubalus mindorensis), also widely known as the Mindoro Dwarf Buffalo, is an exceedingly rare, solitary bovine endemic strictly to the mountainous interior of Mindoro in the Philippines. As the largest native terrestrial mammal surviving in the Philippine...

Vaquita

Mammals > Cetaceans

The Vaquita (Phocoena sinus), affectionately known in Spanish as the ‘little cow,’ is the world’s smallest and most critically endangered marine cetacean. Discovered by science in 1958, this shy, elusive porpoise is found nowhere else on Earth except...

Pygmy Three-toed Sloth

Mammals > Sloths

The Pygmy Three-toed Sloth (Bradypus pygmaeus), also known as the monk sloth, is a diminutive, critically endangered xenarthran mammal endemic solely to a single uninhabited Caribbean island off Panama. A classic textbook example of insular dwarfism, it became...

Kipunji

Mammals > Primates

The Kipunji (Rungwecebus kipunji), also celebrated as the highland mangabey, is an extraordinarily rare and evolutionarily significant African monkey discovered by primatologists in 2003 in the mist-veiled Southern Highlands of Tanzania. Representing the first new...

Ili Pika

Mammals > Lagomorphs

The Ili Pika (Ochotona iliensis) is an exceptionally elusive, diminutive alpine lagomorph endemic exclusively to the rugged, snow-crowned Tian Shan mountains of northwestern China. First discovered by scientists in 1983, this charismatic relative of rabbits is...

Javan Rhinoceros

Mammals > Odd-Toed Ungulates

The Javan Rhinoceros (Rhinoceros sondaicus), also known as the lesser one-horned rhinoceros, represents one of the rarest, most enigmatic, and severely threatened large mammals on Earth. Cloaked in deeply folded, mosaic-patterned dusky grey skin resembling ancient...