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Unformatted text preview: to beat swifter animals Early Warning Hypothesis : Stand up to see upcoming predators Threat Display Hypothesis : large groups need the alpha-male. Being able to stand up tall was an advantage in social groups Male Provisioning Hypothesis : reproductive fitness (males only) developed; was not seen when females feed upright Postural Feeding Hypothesis : being able to get food standing up, instead of constantly reaching up allowed energy efficiency Functional Body Hair Hypothesis : maximum surface area exposed allows (Neill 2011)...
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- Spring '11
- Male provisioning hypothesis