© Jeff Waugh
The male Lava Lizard may have two, three or more mates in a harem, and they can be very aggressive in defending their territory. These guys will stand high on all fours, usually sideways to their opponent to maximize their apparent size, extend the scales on their backs, and bob up and down. The display is usually seen between two males.
One scientist has determined that specific aggressive postures are specific to each island on which they occur.
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