3. Red-Crested Tree Rat
The red-crested tree rat lives in the forests of Colombia. It was thought to be extinct for many years — until volunteers at the El Dorado Nature Reserve were visited by the creature in 2011. The last recorded sighting was in 1898, when two of the critters were found and studied, and were the subsequent source of all information about the rat.
4. Angel Shark (aka Squatina Squatina)
Historically, the angel shark range was from the Northeast Atlantic, Mediterranean, and Black Seas, but commercial fishing has diminished the population. It is now uncommon throughout most of its range with the exception of some areas of the southern Mediterranean and Canary Islands.
6. Javan Rhino
This rhino used to be found throughout Southeast Asia, but there are about 40–60 individuals living in the Ujung Kulon National Park in Java.
10. Hainan Gibbon
There are only about 23 Hainan gibbons left, making it the world’s rarest primate, who live on Hainan Island in the South China Sea.
Watch this video and learn more about the remaining 23 Hainan gibbons:
12. Northern Bald Ibis
There are fewer than 250 mature Northern bald ibises.
14. Roloway monkey
The roloway monkey used to live in the forests of Ghana and Côte d’Ivoire, but it has become extinct in Ghana.
Hunting for consumption as bushmeat and habitat loss have contributed to the drastic decline in the creature’s population.
19. Spoon-Billed Sandpiper
The spoon-billed sandpiper is a small wader that breeds in northeastern Russia. There are fewer than 1,000 mature individuals left in the wild.
20. Luristan Newt (aka Kaiser’s Spotted Newt)
The luristan newt is a type of salamander and is endemic to the southern Zagros Mountains in Iran. The luristan newt is coveted in the pet trade — they were sold on a Ukraine website for $300 — and now only survives in captivity.
24. Tarzan’s chameleon
This chameleon was discovered in 2009 in the Tarzan Forest in Madagascar. Rampant deforestation threatens Tarzan’s chameleon.
26. Red River Giant Softshell Turtle
This enormous weighs 440 pounds. Unfortunately, there are only four red river giant softshell turtles left, all of which live in captivity. The animal is considered sacred by many Vietnamese.
27. Dusky Gopher Frog
The entire population is estimated to be between 60–100 individuals living in two ponds in Mississippi. Unfortunately, the dusky gopher frog population has declined because of loss of wetlands and native longleaf pine habitat, the decline of gopher tortoises, invasive species, disease, drought conditions, and lack of natural and prescribed fire.
29. Madagascar Pochard
This pochard duck stands on the head of a hippo at the zoo in Berlin. There are about 20 mature pochards left in the wild, who live in volcanic lakes north of Bealanana, Madagascar.
30. Hirola (aka Hunter’s Hartebeest)
The hirola antelope found in arid grassy plains in a pocket on the border between Kenya and Somalia. There are between 500 and 1,200 of them left in the wild.
31. Sumatran Rhino
There are fewer than 250 mature Sumatran rhinos left in Malaysia and Indonesia. The Sumatran rhino is hunted for its horn, which is used in traditional medicines.
33. Franklin’s Bumblebee
Franklin’s bumblebee lives in Oregon and California. This bumblebee is threatened by disease from commercially bred bumblebees and habitat destruction.
34. Common sawfish
The common sawfish lives in the coastal tropical and subtropical waters of the Indo-Pacific and Atlantic oceans. Currently, the common sawfish is largely restricted to northern Australia.
Sawfish have adapted to live in both salt and fresh water, while their long saw-like rostrum (nose) has evolved to expertly forage for food under the sandy ocean floor. Sawfish have been placed on the critically endangered list mainly due to a human impact to their environment and being entangled in fishing nets.
35. Tonkin Snub-Nosed Monkey
The tonkin snub-nosed monkey is endemic to Northeastern Vietnam, where there are fewer than 200 left.
Heavy poaching and the destruction of habitat have diminished this monkey’s population.