Purely History on Instagram: "Rusty the narcoleptic dog became famous because of a short educational film made in 1991 that was used in psychology and sleep disorder classes. Rusty was a dachshund who suffered from narcolepsy, a condition that causes sudden and uncontrollable episodes of sleep. In his case, he would be running around full of energy one moment and then abruptly collapse into a deep sleep the next. Sometimes it looked like his legs gave out from under him, which is actually a form

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