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Animal Behavior Chapter 34 /
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What is a behavior? Any response to a stimulus (an external signal)
Examples of stimuli Sounds Smells Sights (light vs dark)
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Why do behaviors exist? Most behaviors have some evolutionary history (the behavior aided survival) Can you think of any examples of behaviors that might have helped our ancestors survive?
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Two Types of Behavior Innate – behavior you are born with, also called INSTINCTS Learned – behavior that develops through experience
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Some human instincts…. Grasping reflex Holding breath when submerged
Pupil dilation
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Even very young babies can learn to swim
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Learned Behaviors Habituation Classical Conditioning
Operant Conditioning Insight Learning
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HABITUATION When your body becomes accustomed to a stimulus.
Ex.: Some animals respond to loud noises by hiding. If the noises are repeated, the animal stops hiding.
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Baby toys are designed to stimulate their brains
Baby toys are designed to stimulate their brains. Babies learn by "trial and error"
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Classical Conditioning
Pairing two stimuli together, response becomes the same Pavlov's Dogs - ring a bell when feeding dogs. Eventually, the dogs would salivate when they heard the bell ring.
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OPERANT CONDITIONING Involves "training" a behavior using a reward or punishment system. Examples: Rat gets treat when it hits a lever Rat gets shocked when it climbs a structure Dog gets treat when it sits on command
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The Skinner Box used to train rats
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Insight Learning Involves using the brain to develop solutions to problems never before encountered. This is not "trial-and-error." The animal (or human) must build on prior experiences to solve a problem Have you ever noticed that a dog tied outside gets tangled in its leash, he can't figure out how to get untangled
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What is the advantage of being helpful?
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Imprinting Many kinds of animals innately do not recognize members of its species. Early in life they learn the distinction. It is irreversible.
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Internal and External Influences
Some animals undergo hibernation or estivation because of a weather change.
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Dominance Hierarchies
Aggressive behavior in animals leads to dominant and submissive animals. This an innate behavior
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Chimp vs Human vs Dog
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BEHAVIORAL CYCLES *Animals respond to periodic changes in environment - daily or seasonal cycles 1. Migration (movement during a season) 2. Circadian rhythms (sleep & wake)
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Christmas Crab Migration
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Sounds, visual displays or chemicals used to attract a mate
COURTSHIP Sounds, visual displays or chemicals used to attract a mate
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Bird of Paradise Dance
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Bower Bird Courtship
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Social Behavior Animals live in a "society" that has its own rules and structure - Chimpanzee troops - Insect colonies - Wolf/Dog Packs - Human Societies
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COMPETITION Occurs between animals, usually for resources (space, water, food) TERRITORY - space protected by an animal
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AGGRESSION - threatening behavior
What queues does this dog give that does not want Cesar to approach?
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COMMUNICATION - passing information, can be visual, sounds or chemicals
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LANGUAGE - using symbols to represent objects and even ideas
* Only humans are capable of true language Apes can learn symbols, but not abstract ideas, like... Freedom, Love, Obsession, Courage, Morality
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