In "The Lion King," which animals famously sing "Hakuna Matata"?

Timon and Pumbaa

What was the main commodity traded in the trans-Saharan trade during the middle ages? Which NFL quarterback was known by the nickname 'Air McNair'? Which MLB ballpark is known as 'The Friendly Confines'? Which famous detective said 'Elementary, my dear Watson'? In which decade was Pong originally introduced to arcades?