Despite their massive size, gorillas are peaceful, shy, and reserved. The genus gorilla comprises both the eastern and western gorilla species. Unfortunately, both are critically endangered species due to habitat loss, poaching, and disease.

Fun Fact: Did you know the Eastern Gorilla is the largest gorilla subspecies? These massive apes can reach up to 6 feet tall when standing upright. With their muscular build and powerful arms, they can weigh up to a whopping 400 pounds.

You can find the mountain gorilla in the heart of the Virunga mountains and Bwindi Impenetrable National Park. These great apes have long hair, formidable jaws, small noses, and a dense coat that helps them survive freezing temperatures. Moreover, this old-world monkey lives 7,200 to 14,100 feet above sea level, where it gets pretty chilly.

Fun Fact: Did you know that orangutans are the largest tree-dwelling mammals on Earth? These creatures spend most of their lives high up in the rainforest canopy, rarely touching the forest floor.

Fun Fact: Did you know that orangutans can travel up to 100 feet in a single swing? These incredible acrobats use their long arms and strong hands to navigate the dense rainforest.

Fun Fact: Did you know that the Tapanuli orangutan is the newest great ape species2? In 2017, experts officially recognized it as a distinct species. With only 800 individuals in the wild, they are also the world's rarest apes.

Fun Fact: Did you know that Siamang gibbons are the largest among the gibbon species? They can be twice as large, reaching up to 3.3 ft.

You can find the Hoolock gibbon in the lush forest canopies of Northeastern India, Bangladesh, Myanmar, and China. Moreover, they are the only apes native to India, dancing amid the trees with agility.

The first rare butterfly we are starting with is the kaiser-i-hind butterfly, also known as the Emperor of India. It is a rare species of swallowtail butterfly native to the Eastern Himalayas- Assam, Meghalaya, Manipur, West Bengal, and Sikkim.

Queen Alexandra’s Birdwing is next on our list of rare butterfly species. Albert S. Meek discovered this species in Papua New Guinea in 1906. He was a naturalist to Walter Rothschild, who named the butterfly after the wife of Edward VII, Queen Alexandra of Denmark.