Young male gorillas usually leave their family group when they are about 11 years old and have their own family group by the age of 15 years old. Young female gorillas join a new group at about 8 years old.

Teflon was accidently discovered by scientist Dr. Roy Plunkett while he was conducting a coolant gas experiment in 1938.

Emus and kangaroos cannot walk backwards, and are on the Australian coat of arms for that reason.

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