These are the most frequently used words in this book.
adult
animals
another
appear
away
baby
bear
behavior
between
biologist
birds
body
cannot
captive
cat
chimpanzees
cubs
day
different
does
dogs
dolphins
down
elephants
emotional
emotions
even
evidence
example
eyes
fear
feel
feelings
female
first
food
found
group
help
humans
hyenas
joy
know
language
less
life
lions
little
lives
love
male
mate
may
might
monkeys
mother
often
others
own
parents
parrots
part
people
perhaps
play
predators
put
rather
say
scientists
see
seem
seen
sense
shame
sign
since
social
something
sometimes
species
study
take
tears
themselves
thought
time
together
toward
two
use
usually
weep
whether
wild
without
years
yet
young
zoo