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Researchers believe they have solved
of science's greatest
. They think they have found out why a dog's nose is
. Scientists from universities in Sweden and Hungary have posited that dogs' noses are
cold because they act as "ultra-sensitive heat detectors". Canines can sense the
of something before they touch it. They added that dogs use their noses to detect tiny
in temperature, such as when possible predators or prey are
. Humans generally only know something is hot after touching it,
with painful consequences. It was
belief that the only reason dogs' noses are cold is to control and regulate their own
temperature.