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Researchers may have solved
of science's
mysteries - why a dog's nose is cold. Scientists from universities in Sweden and Hungary believe dogs' noses are
cold because they act as "ultra-sensitive heat
". Dogs can sense the
of things before they touch
. They said dogs use their noses to detect changes in temperature, such as when predators or
are nearby. Humans only know
is hot after touching it, often with
consequences. It was believed that dogs' noses are cold to control and regulate their own
temperature.
