Good article here. Short and very instructive.
The Five Beasts, Reid Turner: After His triumphal entry into Jerusalem on Palm Sunday Jesus headed to the Temple, making a whip out of cords and driving out of the Temple area not just those selling doves and changing money, but sheep and oxen as well. People who’ve studied Temple practices in the first-century find this story curious since this type of commerce was acceptable and necessary. Read in full here.