Life Lines by Dr. Dolittle

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Tag Archive for ‘food’

Why sharks should be afraid of leopard seals

Leopard seals in New Zealand have a dangerous appetite. Although the animals were known to eat penguins and other seals, researchers only recently discovered that sharks were on the menu as well, which was really surprising. They made this discovery while analyzing fecal samples collected from more than 100 leopard seals. Leopard seals appear to have joined a growing list of animals (orcas, giant octopus) that dine on what we […]

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Seagulls pick up on human cues to find food

Have you ever experienced seagulls seemingly begging for food from you? It is not your imagination. A new study finds that seagulls really do prefer foods that have been handled by humans. The study conducted Madeleine Goumas (University of Exeter, UK) examined whether seagulls picked up on cues from humans or were simply looking for food. While standing about 8 meters away from herring gulls, the team placed two plastic-wrapped […]

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The physiology of bad taste

Ever wonder how humans and other animals evolved the ability to detect foods that can potentially harm us? A recent article published in Physiological Reviews, explains the physiology behind why certain foods taste bad. The act of tasting is very complex and includes receptors in our mouths that can detect specific chemicals in our food and prepare our digestive system to receive the food and, as anyone with a cold knows, […]

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Male hamsters pack on the pounds while females stockpile food for winter

During hibernation common hamsters (Cricetus cricetus) alternate their time between bouts of torpor during which their metabolic rate drops and body temperature is low and arousal during which body temperature is normal. Hibernation allows animals to conserve energy although it is not without costs as it often results in memory deficits, cell damage and reduced immune function. Thus some studies have suggested that animals with sufficient food stores will not undergo hibernation […]

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