Vaquita (Phocoena sinus): The world's most endangered cetacean, the vaquita, is a small porpoise found only in the northern part of the Gulf of California, Mexico.
Javan Rhino (Rhinoceros sondaicus): One of the rarest large mammals, with only around 70 individuals remaining in the wild, primarily in Ujung Kulon National Park, Java, Indonesia.
Amur Leopard (Panthera pardus orientalis): Critically endangered with only around 80 individuals remaining in the wild, found in the forests of the Russian Far East and northeast China.
Sumatran Elephant (Elephas maximus sumatranus): The smallest of the Asian elephants, found in fragmented habitats on the Indonesian island of Sumatra, facing threats from habitat loss and human-wildlife conflict.
Sunda Pangolin (Manis javanica): The most trafficked mammal in the world, the Sunda pangolin is critically endangered due to illegal trade and habitat loss, found in Southeast Asia.
Giant Otter (Pteronura brasiliensis): Found in South America, including the Amazon, the giant otter is rare due to habitat destruction and hunting, with small and fragmented populations.
Saola (Pseudoryx nghetinhensis): Often called the "Asian unicorn," the saola is a critically endangered antelope-like mammal found in the Annamite Range of Vietnam and Laos, rarely seen due to its remote habitat.
Spix's Macaw (Cyanopsitta spixii): Considered extinct in the wild until recent reintroduction efforts, the Spix's macaw is native to Brazil and faces ongoing threats from habitat loss and illegal trapping.