% Data from which conclusions  were  drawn  in  the  article  "Sleep  in 
% Mammals: Ecological and Constitutional Correlates" by Allison, T.  and 
% Cicchetti, D. (1976), _Science_, November 12, vol. 194,  pp.  732-734. 
% Includes brain and body  weight,  life  span,  gestation  time,  time 
% sleeping, and predation and danger indices for 62 mammals.
% 
% 
% 
% Variables below (from left to right) for Mammals Data Set:
% 
% species of animal
% 
% body weight in kg
% 
% brain weight in g
% 
% slow wave ("nondreaming") sleep (hrs/day)
% 
% paradoxical ("dreaming") sleep (hrs/day)
% 
% total sleep (hrs/day)  (sum of slow wave and paradoxical sleep)
% 
% maximum life span (years)
% 
% gestation time (days)
% 
% predation index (1-5)
%                 1 = minimum (least likely to be preyed upon)
%                 5 = maximum (most likely to be preyed upon)
% 
% sleep exposure index (1-5)
%                 1 = least exposed (e.g. animal sleeps in a 
%                     well-protected den)
%                 5 = most exposed
% 
% overall danger index (1-5)
%                 (based on the above two indices and other information)
%                 1 = least danger (from other animals)
%                 5 = most danger (from other animals)
% 
% 
% 
% For more details, see
% 
% Allison, Truett and Cicchetti, Domenic V. (1976), "Sleep  in  Mammals: 
% Ecological and Constitutional  Correlates",  _Science_,  November  12, 
% vol. 194, pp. 732-734.
% 
% 
% 
% The above data set can be freely used for non-commercial purposes  and 
% can be freely distributed (permission in  writing  obtained  from  Dr. 
% Truett Allison).
% 
% Submitted by Roger Johnson
% rwjohnso@silver.sdsmt.edu
% 
% 
% 
% Information about the dataset
% CLASSTYPE: numeric
% CLASSINDEX: none specific
% 
@relation sleep
@attribute species {African_elephant,African_giant_pouched_rat,Arctic_Fox,Arctic_ground_squirrel,Asian_elephant,Baboon,Big_brown_bat,Brazilian_tapir,Cat,Chimpanzee,Chinchilla,Cow,Desert_hedgehog,Donkey,Eastern_American_mole,Echidna,European_hedgehog,Galago,Genet,Giant_armadillo,Giraffe,Goat,Golden_hamster,Gorilla,Gray_seal,Gray_wolf,Ground_squirrel,Guinea_pig,Horse,Jaguar,Kangaroo,Lesser_short-tailed_shrew,Little_brown_bat,Man,Mole_rat,Mountain_beaver,Mouse,Musk_shrew,N_American_opossum,Nine-banded_armadillo,Okapi,Owl_monkey,Patas_monkey,Phanlanger,Pig,Rabbit,Raccoon,Rat,Red_fox,Rhesus_monkey,Rock_hyrax_(Hetero_b),Rock_hyrax_(Procavia_hab),Roe_deer,Sheep,Slow_loris,Star_nosed_mole,Tenrec,Tree_hyrax,Tree_shrew,Vervet,Water_opossum,Yellow-bellied_marmot}
@attribute body_weight numeric
@attribute brain_weight numeric
@attribute slow_wave numeric
@attribute paradoxical numeric
@attribute total_sleep numeric
@attribute maximum_life_span numeric
@attribute gestation_time numeric
@attribute predation_index numeric
@attribute sleep_exposure_index numeric
@attribute overall_danger_index numeric

@data
African_elephant,6654.0,5712.0,nan,nan,3.3,38.6,645.0,3,5,3
African_giant_pouched_rat,1.0,6.6,6.3,2.0,8.3,4.5,42.0,3,1,3
Arctic_Fox,3.385,44.5,nan,nan,12.5,14.0,60.0,1,1,1
Arctic_ground_squirrel,0.92,5.7,nan,nan,16.5,nan,25.0,5,2,3
Asian_elephant,2547.0,4603.0,2.1,1.8,3.9,69.0,624.0,3,5,4
Baboon,10.55,179.5,9.1,0.7,9.8,27.0,180.0,4,4,4
Big_brown_bat,0.023,0.3,15.8,3.9,19.7,19.0,35.0,1,1,1
Brazilian_tapir,160.0,169.0,5.2,1.0,6.2,30.4,392.0,4,5,4
Cat,3.3,25.6,10.9,3.6,14.5,28.0,63.0,1,2,1
Chimpanzee,52.16,440.0,8.3,1.4,9.7,50.0,230.0,1,1,1
Chinchilla,0.425,6.4,11.0,1.5,12.5,7.0,112.0,5,4,4
Cow,465.0,423.0,3.2,0.7,3.9,30.0,281.0,5,5,5
Desert_hedgehog,0.55,2.4,7.6,2.7,10.3,nan,nan,2,1,2
Donkey,187.1,419.0,nan,nan,3.1,40.0,365.0,5,5,5
Eastern_American_mole,0.075,1.2,6.3,2.1,8.4,3.5,42.0,1,1,1
Echidna,3.0,25.0,8.6,0.0,8.6,50.0,28.0,2,2,2
European_hedgehog,0.785,3.5,6.6,4.1,10.7,6.0,42.0,2,2,2
Galago,0.2,5.0,9.5,1.2,10.7,10.4,120.0,2,2,2
Genet,1.41,17.5,4.8,1.3,6.1,34.0,nan,1,2,1
Giant_armadillo,60.0,81.0,12.0,6.1,18.1,7.0,nan,1,1,1
Giraffe,529.0,680.0,nan,0.3,nan,28.0,400.0,5,5,5
Goat,27.66,115.0,3.3,0.5,3.8,20.0,148.0,5,5,5
Golden_hamster,0.12,1.0,11.0,3.4,14.4,3.9,16.0,3,1,2
Gorilla,207.0,406.0,nan,nan,12.0,39.3,252.0,1,4,1
Gray_seal,85.0,325.0,4.7,1.5,6.2,41.0,310.0,1,3,1
Gray_wolf,36.33,119.5,nan,nan,13.0,16.2,63.0,1,1,1
Ground_squirrel,0.101,4.0,10.4,3.4,13.8,9.0,28.0,5,1,3
Guinea_pig,1.04,5.5,7.4,0.8,8.2,7.6,68.0,5,3,4
Horse,521.0,655.0,2.1,0.8,2.9,46.0,336.0,5,5,5
Jaguar,100.0,157.0,nan,nan,10.8,22.4,100.0,1,1,1
Kangaroo,35.0,56.0,nan,nan,nan,16.3,33.0,3,5,4
Lesser_short-tailed_shrew,0.005,0.14,7.7,1.4,9.1,2.6,21.5,5,2,4
Little_brown_bat,0.01,0.25,17.9,2.0,19.9,24.0,50.0,1,1,1
Man,62.0,1320.0,6.1,1.9,8.0,100.0,267.0,1,1,1
Mole_rat,0.122,3.0,8.2,2.4,10.6,nan,30.0,2,1,1
Mountain_beaver,1.35,8.1,8.4,2.8,11.2,nan,45.0,3,1,3
Mouse,0.023,0.4,11.9,1.3,13.2,3.2,19.0,4,1,3
Musk_shrew,0.048,0.33,10.8,2.0,12.8,2.0,30.0,4,1,3
N_American_opossum,1.7,6.3,13.8,5.6,19.4,5.0,12.0,2,1,1
Nine-banded_armadillo,3.5,10.8,14.3,3.1,17.4,6.5,120.0,2,1,1
Okapi,250.0,490.0,nan,1.0,nan,23.6,440.0,5,5,5
Owl_monkey,0.48,15.5,15.2,1.8,17.0,12.0,140.0,2,2,2
Patas_monkey,10.0,115.0,10.0,0.9,10.9,20.2,170.0,4,4,4
Phanlanger,1.62,11.4,11.9,1.8,13.7,13.0,17.0,2,1,2
Pig,192.0,180.0,6.5,1.9,8.4,27.0,115.0,4,4,4
Rabbit,2.5,12.1,7.5,0.9,8.4,18.0,31.0,5,5,5
Raccoon,4.288,39.2,nan,nan,12.5,13.7,63.0,2,2,2
Rat,0.28,1.9,10.6,2.6,13.2,4.7,21.0,3,1,3
Red_fox,4.235,50.4,7.4,2.4,9.8,9.8,52.0,1,1,1
Rhesus_monkey,6.8,179.0,8.4,1.2,9.6,29.0,164.0,2,3,2
Rock_hyrax_(Hetero_b),0.75,12.3,5.7,0.9,6.6,7.0,225.0,2,2,2
Rock_hyrax_(Procavia_hab),3.6,21.0,4.9,0.5,5.4,6.0,225.0,3,2,3
Roe_deer,14.83,98.2,nan,nan,2.6,17.0,150.0,5,5,5
Sheep,55.5,175.0,3.2,0.6,3.8,20.0,151.0,5,5,5
Slow_loris,1.4,12.5,nan,nan,11.0,12.7,90.0,2,2,2
Star_nosed_mole,0.06,1.0,8.1,2.2,10.3,3.5,nan,3,1,2
Tenrec,0.9,2.6,11.0,2.3,13.3,4.5,60.0,2,1,2
Tree_hyrax,2.0,12.3,4.9,0.5,5.4,7.5,200.0,3,1,3
Tree_shrew,0.104,2.5,13.2,2.6,15.8,2.3,46.0,3,2,2
Vervet,4.19,58.0,9.7,0.6,10.3,24.0,210.0,4,3,4
Water_opossum,3.5,3.9,12.8,6.6,19.4,3.0,14.0,2,1,1
Yellow-bellied_marmot,4.05,17.0,nan,nan,nan,13.0,38.0,3,1,1