what are the 5 main characteristics of reptiles?
['Reptiles Are Four-Legged Vertebrate Animals. ... ', 'Most Reptiles Lay Eggs. ... ', 'The Skin of Reptiles Is Covered With Scales (or Scutes) ... ', 'Reptiles Have Cold-Blooded Metabolisms. ... ', 'Reptiles Breathe With the Aid of Lungs.']