The native animals are believed to less tolerant to hot weather than other Australian species.Their spines act like a blanket, and the animals cannot pant, sweat or lick themselves to cool down.But thanks to infrared cameras, researchers have now discovered unique methods they use to release heat.Echidnas have long been known to blow bubbles of mucus out their noses, but it was believed this was primarily to clear dirt and dust from their nasal passages.
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