An extremely rare teddy-bear lookalike mammal has been spotted in China for the first time in 20 years. The tiny Ili Pika, an eight-inch long rabbit-relative, is one of the world's most endangered animals with less than 1,000 animals believed to be left in its natural habitat. The Ili Pika population is believed to have declined by almost 70 per cent since its discovery in 1983, scientists say. Adorable: The Ili Pika is one of the world's rarest mammals, and has been spotted for the first time in 20 years in its natural territory in the Xinjiang region of northwestern China . The Ili Pika, formally known as Ochotona iliensis, was discovered by conservationist Li Weidong in 1983, who named it after his hometown. The animals can only be found in the Tianshan mountain range in the Xinjiang region of northwestern China, and its territory is under threat, with the population rapidly declining. When the Ili Pika was first discovered, Mr Li and his team estimated that there were around 2,900 animals living in the Tianshan mountain range. Nearly 20 years later, in 2002, Mr Li conducted a new demographic, which found that the population had dropped to 2,000. Last year's fresh census, which is when the Ili Pika was spotted for the first time in 20 years, concluded that the population is down to less than 1,000 pikas. Rare animal: Chinese scientists believe that there are less than 1,000 Ili Pikas left in the world . Disappearing: Ili Pika population is believed to have declined by 70 per cent since its discovery in 1983 . 'I discovered the species, and I watched as it became endangered,' Mr Li told CNN. 'If it becomes extinct in front of me, I'll feel so guilty.' Very little is known about this rare species, as no successful observations about its ecology, behaviour or reproduction has been carried out. Mr Li believes global warming is the cause of the decline in Ili Pikas as the altitude of permanent snow in the Tianshan mountain range has risen. 'This tiny species could be extinct any time,' Mr Li added. 'They don't exist in the sites where they used to be anymore.' The Ili Pika was discovered by conservationist Li Weidong in 1983, and it was he who photographed the adorable animal for the first time in 20 years last summer .
The tiny Ili Pika lives in a mountain range in the Xinjiang region of northwestern China . The rare animal, which was discovered in 1983, is just eight inches from nose to tail . Number of Ili Pikas is believed to be down 70 per cent since its discovery, to less than 1,000 animals .