According to the National Center for Missing or Exploited Children (NCMEC) roughly 800,000 children are reported missing each year in the United States, which is about 2,000 a day. A large number of these are stranger abductions cases.
Back in the 1970's, a hair and skin sample were sent to the FBI for examination on whether it was from Bigfoot. Over 40 years later, the organization has released it's findings.