Jamaican Lizards' Shows Of Strength Mark Territory At Dawn, Dusk

Wednesday, August 27, 2008 - 16:14 in Biology & Nature

What does Jack LaLanne have in common with a Jamaican lizard? Like the ageless fitness guru, the lizards greet each new day with vigorous push-ups. That's according to a new study showing that male Anolis lizards engage in impressive displays of reptilian strength -- push-ups, head bobs, and threatening extension of a colorful neck flap called a dewlap -- to defend their territory at dawn and dusk.

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