The early four-legged animals, the tetrapods, were the forebears of today’s mammals, birds, reptiles, and amphibians.
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Suffering pain at the dentist could be because ancient fish evolved the predecessors for teeth to feel things
Crabs use their sensory organs, called sensilla, to perceive temperature, vibration and smell
Catfish have nerves in the teeth on the outside of their bodies
Ever wondered why our teeth are so sensitive to pain or even just cold drinks? It might be because they first evolved for a very different pur…