Life Lines by Dr. Dolittle

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Archive for September 2020

Amazing dives

Researchers at Duke University recorded how long whales stay underwater during dives and made an impressive discovery. Some Cuvier’s beaked whales were capable of exceptionally long dives. While most dives were less than 78 minutes long, one animal performed a dive that lasted more than 3 hours! Interestingly, the recovery times from the dives did not appear to have a clear relationship with the dive duration. Researchers think these animals […]

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Why being ‘bird-brained’ may actually be a compliment

It has long been suspected that birds (and reptiles) were not very smart because they lack a neocortex – the part of the brain that is responsible for working memory, perception, problem solving, and conscious thought in mammals. In stark contrast to this idea, studies have repeatedly shown that several species of birds have very good memories as well as planning and problem solving skills (see examples below), which has […]

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Your dog’s internal compass

Apparently pooping is not the only thing dogs do that align with the Earth’s magnetic field. Hunting dogs are kind of like migratory birds in their ability to roam and find their way back to the same spot, while relying on the Earth’s magnetic field. In a new study published in eLife, the same researchers that discovered how dogs prefer to poop found that hunting dogs appear to use the […]

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Researchers discover cause of hearing loss in an underground dweller

Naked mole rats are rather extreme animals in many ways. As underground dwellers, they live in chronically hypoxic environments and are blind. These animals also age more slowly than other mammals and are resistant to developing cancer even though they are long-lived. Did you also know, they are hard of hearing? In a new study published in Current Biology, researchers have discovered the cause of their hearing loss. The inner […]

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