He should try teaching to a two-toed sloth.
[Note: Two-toed sloths and three-toed sloths can also be called (or are also known as) Two-fingered sloths and three-fingered sloths]
He should try teaching to a two-toed sloth.
[Note: Two-toed sloths and three-toed sloths can also be called (or are also known as) Two-fingered sloths and three-fingered sloths]