format
rl{
[,1] name: unique for each case
[,2] hair: Boolean
[,3] feathers: Boolean
[,4] eggs: Boolean
[,5] milk: Boolean
[,6] airborne: Boolean
[,7] aquatic: Boolean
[,8] predator: Boolean
[,9] toothed: Boolean
[,10] backbone: Boolean
[,11] breathes: Boolean
[,12] venomous: Boolean
[,13] fins: Boolean
[,14] legs. Set of values: [0,2,4,5,6,8]
[,15] tail: Boolean
[,16] domestic: Boolean
[,17] catsize: Boolean
[,18] Class labels, integer values in range [1,7].
}source
Forsyth, R. (1990). UCI Machine Learning Repository - Zoo Data Set [http://archive.ics.uci.edu/ml/datasets/zoo]. Irvine, CA: University of California, School of Information and Computer Science.