（This might seem）surprising given goats' reputation for eating anything green,
but tea isn't as defenceless as it looks.
Tea leaves are loaded with bitter chemicals designed to repel browsing animals.
It works on the goats,
who leave the tea untouched and instead eat up the weeds,
fertilising the tea plants with their droppings.
The surprise is that we humans should find the same bitter chemical cocktail utterly irresistible.