Espèces d'espèces

Do you know that you are an Amniote like the golden eagle, a tetrapod like the rattlesnake with its four limbs for walking? But hold on - A rattlesnake on four legs? From the point of view of evolution, yes indeed! One fine day, the common ancestor of the snakes discovered the knack of slithering and thus lost its feet. Stranger still, did you know the crocodile is more closely related to the canary than to the viper?...