"That's what made us wonder if the koalas were using the trees as a heat sink," said Dr Kearney.
The team used a thermal camera to take pictures of koalas on a particularly hot day. [.Com]
"When we got the images, back it was so obvious what the koala was doing," explained Dr Kearney. "You could see the koala sitting on the coolest part of the tree trunk with its bottom wedged right into the coolest spot.
"If we had thermal vision, it would have been an obvious thing."
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