D. ROBERTS / SCIENCE PHOTO LIBRARY D. ROBERTS / SCIENCE PHOTO LIBRARY
Old World rabbit. X-ray of the skull of an Old World rabbit (Oryctolagus cuniculus). The rabbit uses its sharp incisors (centre left) to bite off pieces of vegetation, which are then passed to its molar teeth for chewing (centre). This rabbit lives in large colonies in a shared burrow, and is most active at night. It is found on sandy ground with scrubland and bushes, as well as coniferous forests. While it is native to Europe, it has been introduced to such countries as Australia and Chile.
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