Northeast India

Kaziranga National Park, on the Brahmaputra floodplain in Assam, holds over two-thirds of the world's greater one-horned rhinoceros population and is the textbook conservation success story of the region — rhino numbers recovered from a handful in the early 1900s (when hunting had nearly wiped them out) to well over 2,000 today under sustained anti-poaching effort. It was declared a reserve forest in 1905 at the urging of Mary Curzon (wife of the then-Viceroy), became a national park in 1974, and was inscribed as a UNESCO site in 1985; the park also holds significant populations of wild water buffalo, swamp deer, and tiger, giving it one of the highest tiger densities of any reserve in India.

Manas National Park, straddling the India–Bhutan border in Assam, is simultaneously a UNESCO Natural World Heritage Site, a Tiger Reserve, an Elephant Reserve, and a Biosphere Reserve; it is the last stronghold of the pygmy hog and the hispid hare, and was for a period in the 1990s–2000s placed on UNESCO's "in danger" list due to insurgency-linked poaching before recovering its wildlife populations through community-partnered conservation.

Nameri National Park, in Sonitpur district, is best known ornithologically for the endangered white-winged wood duck and for river-rafting/birding tourism along the Jia Bhoroli river; it also adjoins Pakke Tiger Reserve across the Arunachal border, forming a connected landscape.

Dibru-Saikhowa National Park, a river-island and wetland complex where the Brahmaputra, Dibru, and Lohit rivers meet, is unusual for hosting a population of feral horses (descended from army/circus animals) alongside the white-winged wood duck and capped langur; seasonal flooding makes much of the park accessible only by boat for part of the year.

Namdapha National Park, in the eastern-most reaches of Arunachal Pradesh bordering Myanmar, is the only protected area in the world where all four big cat species — tiger, leopard, snow leopard, and clouded leopard — are recorded together, a consequence of its extraordinary altitudinal range from tropical lowland to snow-capped peaks within a single park.

Balpakram National Park, on the South Garo Hills plateau of Meghalaya, is locally called the "land of perpetual wind" and is steeped in Garo folklore as the abode of spirits; it holds red panda, elephant, and one of the few confirmed habitats for the elusive marbled cat in the region.

Keibul Lamjao National Park, on Loktak Lake in Manipur, is world-famous as the only floating national park, its terrain made of phumdis (floating masses of vegetation and soil) thick enough to support wildlife; it is the last natural habitat of the Sangai or brow-antlered deer, once thought extinct until a small surviving population was rediscovered in the 1950s.

Intanki National Park, in Nagaland, is a lowland tropical forest important for elephants and the hoolock gibbon (India's only ape), though it has faced chronic pressure from encroachment and jhum (shifting) cultivation at its margins.

Dampa Tiger Reserve, Mizoram's largest protected area near the Bangladesh border, is a dense bamboo and tropical forest that once recorded reasonable tiger numbers but — like several small northeastern reserves — saw a sharp decline, becoming a frequently cited case in discussions of tiger reintroduction planning for the region.

Memory hook: "Keibul Lamjao floats, Namdapha hosts all four cats, Dibru-Saikhowa keeps wild horses." Three of the Northeast's most-asked superlatives, paired for recall.

Memory hook (Assam's four): "Kazi's rhino rode a Man's pygmy hog to Nameri's duck pond, then drifted Dibru-Saikhowa." Kaziranga → Manas → Nameri → Dibru-Saikhowa — picture them lined up west to east along the Brahmaputra, exactly as they sit on your mental map.

Memory hook (one small state, one park each): "Balloons of wind (Balpakram) blew a floating Keibul deer into Intanki's gibbon tree, which grew through Dampa's bamboo." Meghalaya → Manipur → Nagaland → Mizoram.

Practice Recall: Before reading on, name Assam's four National Parks listed in this book.

Answer: Kaziranga, Manas, Nameri, Dibru-Saikhowa.