Studying the sleep patterns of wolves in comparison to dogs can give us an insight into how evolution and domestication may have affected sleep – and that's exactly the point of a new study.
The study involved seven hand-raised, socialized wolves, which meant that they could be calmly and safely coaxed into natural sleep by their handlers without any risk of agitating or harming the animals.
It's the first time that the sleeping habits of wolves, the dog's closest wild relative, have been studied.
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