data salamand; length species $ 18 type $ 8 ; input id species type oxy head; cards; 1 G._porphyriticus Lungless 81 .13 2 P._ruber Lungless 84 .13 3 P._glutinosus Lungless 76 .16 4 D._quadramaculatus Lungless 86 .19 11 A._tiginum Lungs 45 .23 12 A._talpoideum Lungs 49 .23 13 A._opacum Lungs 64 .17 14 A._macrodactylum Lungs 65 .16 15 A._maculatum Lungs 69 .16 16 R._olympicus Lungs 74 .14 ; run;