These are growth measurements on Tammar wallabies (Macropus eugenii). The data
have one row per wallaby per time point. Most lengths are in tenths of mm. The
variables are:

anim   animal number
sex    1=male, 2=female
loca   location of animal
leng   length of animal
head   head length
ear    ear length
arm    arm length
leg    leg length
pres   pes (foot) length
tail   tail length
weight weight
age    age in days

These data were taken from the web site OzData at 

   http://www.maths.uq.edu.au/~gks/data/