Reptiles are not able to eat as frequently as mammals and birds can eat. This is due to a trait that mammals and birds share but that reptiles do not have. What is this trait?

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The trait that mammals and birds share but reptiles do not have is endothermy, which is the ability to regulate their own body temperature. Mammals and birds require a lot of energy to maintain their body temperature, so they need to eat frequently. Since reptiles are unable to regulate their own body temperature, they need to conserve as much energy as possible, which means they cannot eat as frequently as mammals and birds.

Reptiles Are Not Able to Eat as Frequently as Mammals