They are each caused by a different mite.
Sarcoptic mange afflicts dogs, cats, and other animals, including humans.
It is caused by the notoedres mite, which burrows into the skin and causes intense itching, irritation, and skin thickening. The animal will scratch or bite at the itchy areas. Humans can get scabies from handling an affected animal, characterized by intense itching, worse at night, inside the arms or on the waist, chest, hands, or wrists. The good news is that the mite cannot reproduce on human skin, so the infestation ends within three weeks unless there is additional exposure. Female mites tunnel underneath the skin of a dog or cat to lay their eggs, which hatch within ten days.