Experts baffled by 'small' Bangladesh tigers
10:36 AM | 
Posted by
Arpanjot Singh Chawla
Tigers prowling the famous mangrove forests of Bangladesh are nearly half the weight of other wild Bengal tigers in South Asia, a study has found.
The average weight of female tigers in the Sundarbans forests was 76.7kg (170lb), according to the US Fish and Wildlife Service research.But other wild Bengal tigers in the region tipped the scales at 138.2 kg on average.
Researchers said this could be because Sundarbans tigers ate smaller deer.
The team believes the big cats found in the mangrove forest, which stretches from Bangladesh to India, could be among the world's smallest tigers.
They belong to one of nine sub-species of Bengal tiger in India, Nepal, Bangladesh and Bhutan.
Smaller dinner Researchers from the University of Minnesota and the Bangladesh Forest Department - who carried out the study for the US Fish and Wildlife Service - weighed three Sundarbans tigers.
Two of the animals were captured and sedated, but the other one had been killed by villagers.
Adam Barlow, one of the authors of the research, said they do not know why the Sundarbans tigers are so small.
"This could be related to the small size of deer available to tigers in the Sundarbans, compared to the larger deer and other prey available to tigers in other parts," he said.
It is estimated that between 300 and 500 Bengal tigers live in the Bangladesh side of the Sundarbans alone.
They are isolated from the next tiger population by a distance of up to 300km (190 miles).
Tigers are an endangered species. There are only about 3,500 left in the wild worldwide - less than one third of them breeding females.
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