He thought that angels could not enter a house if a dog was there and that black dogs were devils. Thus he ordered dogs to be killed and forbid the selling of dogs. Satan lives in the nose over night. He can be flushed out if you snort water up and then out the nose. This makes no sense to me.
People turn into rats, pigs and monkeys.
One wing of a fly has poison but the other wing has the antidote to it. We should drink camel urine as a medicine. Fevers are from the fire of hell and can be cooled by water. Only the Hadith gives us answers to these questions. From Bukhari vol.