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Throat organ reveals depth of koala love.

Dec. 2 - During mating season, the male koala makes itself known to potential mates with a deep, extended bellow that reverberates through the bush. Scientists have long wondered how such a small animal can make such a big sound but they need wonder no longer. As Rob Muir reports, a UK-based researcher has found the answer.

投稿日：2013-12-03 08:20:06
長さ：00:00:54
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