This BBC video, recorded in Australia, says about itself:
16 March 2018
A Lace Monitor Lizard eyes a Possum‘s nest as an easy meal but doesn’t count on the female Possum fighting tooth and claw to defend her babies.
Researchers have evidence that an extinct species of monitor lizard had four eyes, a first among known jawed vertebrates. Today, only the jawless lampreys have four eyes: here.
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