Vertebrate animals riddle 4Versión en línea Guess what vertebrate we are talking about. por Miguel Angel Preciado Lopez 1 They are vertebrates. Hints 1 They live on land and in water. 2 They are oviparous 3 They lay soft eggs in water. 4 They have soft, moist skin. 5 At first they breathe with gills, then develop lungs when they are adults.