Living Together
Chapter 1, section 3
Cohick
Living Together
•When animals interact it maybe in a
large group or with one individual.
•They can work together or compete.
•If it is within the same species it is
called “Social Behavior”
•It requires communication!
telephone
Communication
Talk
• In communication a signal must travel from
one animal to another, and the receiver must
respond to the signal.
• What are some ways humans communicate?
T.V.
Reading
Internet
Communication helps animals:
•
•
•
•
Live together
Find food
Avoid enemies (warning)
Protect home
• mating
Territory: an area that is occupied by one
animal or a group of animals and that other
members of the species are excluded.
Vampire bats are one of the few
animals in the world that will
share a meal with unrelated
colony members—a truly
altruistic behavior. These bats
must consume 50-100 percent of
their weight in blood each night
(usually from cows or horses).
If a bat misses a meal two nights
in a row, it will die. As many as
a third of the bats go without
eating each night, yet few bats
starve. A hungry bat will lick
the wings of another bat, which
in response usually regurgitates
some of its meal to help the
other bat survive.
How do animals communicate?
Pheromone
•Chemicals that warn of danger
•Attract a mate
•Leave a trail to follow
Hearing
Body Language:Visual display
wink
Frown
smile
Part of a family.
Lions live in a group called a pride, unlike their
relative, the tiger, who is generally solitary.
Benefits of a group.
• Safety in numbers
• Cooperate to defend
• Cooperate to hunt
Downside of a group
• Numbers attract
predators
• Need more food:
creates competition
• Competition for mates.
• Spread disease