Cats can purr for various reasons, using the soft rumble as a way of communicating and as a form of self-soothing or even healing. This is why cats will often purr when they're injured, or after a stressful event.
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Bloodletting (or blood-letting) is the withdrawal of blood from a patient to prevent or cure illness and disease
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The crust is made of solid rocks and minerals. ... kilometers) beneath the ocean floor, is mostly composed of different types of basalts
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Answer: carbon monoxide,hydrogen cyanide
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It can be different because dog’s have a stronger sense of smell than humans. Dogs have nostrils and lungs just like humans and other organisms.