What Reptile Has Spikes on His Back?

Scales are a defining characteristic of all reptiles. Some have smooth scales, some have rough scales and a small number of reptiles have evolved to develop spikes too. In turn, predators have evolved to see spiked reptiles as a potentially dangerous prey, because of the injury risk that killing

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What Reptile Has Spikes on His Back?

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What Reptile Has Spikes on His Back?