The mountain gorilla is faced with many threats, such as illegal hunting, loss of habitat and human diseases. Although the population has grown slowly over the last 10 years, only 786 remain in the wild in Africa.

Fewer than 6,500 snow leopards remain in the wild in Central Asia. Farmers often kill the big cats because they eat livestock such as sheep and goats. Snow leopards are also hunted for their bones and fur.

The increasing popularity of sushi has quickly decreased the bluefin tuna population. Tuna is the “most wanted” fish for illegal fishing. More than 4 million tons are caught each year. Bluefin tuna are close to extinction.

As few as 40 Javan rhinos are thought to survive in the wild in Indonesia, and there are none in captivity. Rhinos are killed for their horns, which are used in Chinese medicine. But natural disasters remain their biggest threat.

The vaquita is a small porpoise which lives in Mexico’s Gulf of California. It is the world’s smallest and most endangered small marine cetacean. It is believed that only 245 vaquitas are left in the wild.