brood
nourished and taken care of
incubate
fossilized organism
greenhouse gas concentration
the chemicals that make up mineral proportions
domesticated livestock
mammalian livestock
diversifies the food options available
instinctively
ethologist
by performing these behaviors
appeasement behavior
in the dominance hierarchy conflicts can arise
the mother displays a strong protective instinct towards her offspring
this arrangement benefits both animals
nurturing, holding, and keeping the babies warm
they must be on the lookout for predators
sharing of information
interact with the dominant animal without provoking aggression
priority access
acts as a
developed two key adaptations
insulating properties
frigid habitat
enter hibernation
suitable breeding site
cumulative nature
courtship ritual
establish suitability

Species
aquatic mammals
marine mammals
desert animals
nocturnal animals
tropical birds
mammalian species

Movement
abruptly stopped
carefully approaches
sneakily approaches ~ creep
sprints
withdraws
advances ~ with purpose
approach and catch
chases
hunts down

Deceit
entices ... to ...
lures ... out of ...
lures ... into ...

Hunting
stalks and seizes the prey
approaches and catches the prey
ambush

Beginners
on one end of the spectrum
on the other end of the spectrum

Fillers
certain behaviors
innate behaviors
behavioral response
shaped like a
poses as a potential threat
relatively simple
specific stimuli

Show
exhibit ~ obvious and proud
signal ~ in a special way
display ~ something obvious
present ~ giving someone
demonstrates ~ as an example

Phrases
enables us... but compromises
without exerting any effort
expending effort
cumulative effort
employ ... as a