The Army tweeted three images late on Monday showing a series of foot-shaped impressions.
Photos of "Yeti footprints" posted online by the Indian Army triggered a social media storm on Tuesday, with users ridiculing the military for propagating theories debunked by science.
The Army tweeted three images late on Monday showing a series of foot-shaped impressions, each almost a metre (yard) long in the snow in the Himalayas near the Nepal-China frontier.
"For the first time, an #IndianArmy Moutaineering Expedition Team has sited Mysterious Footprints of mythical beast 'Yeti'.
It added the "elusive snowman has only been sighted at Makalu-Barun National Park in the past", referring to footprints reported by British explorer Eric Shipton in 1951 on the west side of Mount Everest.
Legend has it the "Yeti" or "Abominable Snowman" lives in the Himalayas -- but no proof of the large creature has ever been produced.
An Army official told AFP the pictures were released to "excite a bit of a scientific temper".
Social media users were quick to jump on the Indian military for its tweet, while scientists said the prints were probably made by a bear and elongated and misshapen by the elements.
"With all due respect, institutions such as yours should be more responsible and careful before going ahead and declaring the sighting of any footprints as 'Yeti's'!", said Kushal Prajapati.
"There's been lots of research done on Bigfoot/Yeti (including sighting/footprints) with none proving its existence," he added.
"Seriously disappointing to see Army propagating such foolish myths into reality. Expected better from you guys.
"Congratulations, we are always proud of you. salutes to the #IndianArmy Mountaineering Expedition Team," wrote Tarun Vijay, a member of the ruling Bharatiya Janata Party.
The Army said the footprints measured 32 inches by 15 inches (81 centimetres by 38) and were spotted by a team on April 9 close to the Makalu Base Camp.
The Yeti is traditionally described as an ape-like creature, taller than a human, that lives variously in the Himalayas, Siberia and parts of Central and East Asia. The North American version is known as Bigfoot.
Most scientists have written the creature off as a centuries-old myth originating in Tibet.
Forensic results of previous samples have proved to be from prehistoric bears and one purported piece of evidence turned out to be a gorilla suit made of rubber.
"This is probably a footprint of a brown bear," Sathyakumar Sambandam, a professor at the Wildlife Institute of India, told AFP.
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Just 40 minutes after leaving the examination room, she was back at her desk, stunning her family who had rushed to the clinic as well as the invigilators.
Park director Shiv Kumar said: “It appears the tiger strayed into a human settlement area to escape the floods and now appears very tired. We are preparing to tranquillise the tiger.”