👉 Phrynocephalus is a type of vertebrate that lacks a brain or spinal cord, which makes it amniotic, or not brainstem, and thus unable to respond to external stimuli. This condition results in a soft, squishy head that resembles a penguin's head.
👉 Phrynocephalus is a type of vertebrate that lacks a brain or spinal cord, which makes it amniotic, or not brainstem, and thus unable to respond to external stimuli. This condition results in a soft, squishy head that resembles a penguin's head.
