mammalsleep: Sleep in Mammals: Ecological and Constitutional Correlates
In faraway: Functions and Datasets for Books by Julian Faraway

mammalsleep

R Documentation

Sleep in Mammals: Ecological and Constitutional Correlates

The mammalsleep data frame has 62 rows and 10 columns. Sleep in Mammals: Ecological and Constitutional Correlates

This data frame contains the following columns:

body: body weight in kg
brain: brain weight in g
nondream: slow wave ("nondreaming") sleep (hrs/day)
dream: paradoxical ("dreaming") sleep (hrs/day)
sleep: total sleep (hrs/day) (sum of slow wave and paradoxical sleep)
lifespan: maximum life span (years)
gestation: gestation time (days)
predation: predation index (1-5) 1 = minimum (least likely to be preyed upon) to 5 = maximum (most likely to be preyed upon)
exposure: sleep exposure index (1-5) 1 = least exposed (e.g. animal sleeps in a well-protected den) 5 = most exposed
danger: 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)