hair	2	0.496921	1.425743
feathers	2	0.400495	1.198020
eggs	2	0.495325	1.584158
milk	2	0.493522	1.405941
airborne	2	0.427750	1.237624
aquatic	2	0.481335	1.356436
predator	2	0.499505	1.554455
toothed	2	0.491512	1.603960
backbone	2	0.384605	1.821782
breathes	2	0.407844	1.792079
venomous	2	0.271410	1.079208
fins	6	0.376013	1.168317
legs	2	1.253194	2.544554
tail	2	0.439397	1.742574
domestic	2	0.336552	1.128713
catsize	7	0.498314	1.435644
type	2	2.102709	2.831683