Kautilya's Arthashastra 2.29.27

2.29.27

udaśvitśvavarāhebhyo dadyuḥ //

They shall give buttermilk as drink to dogs and hogs, and reserve a little (buttermilk) in a bronze vessel to prepare their own dish: they may also make use of coagulated milk or cheese (kíláta) to render their oilcakes relishing (ghánapinyáka-kledartha).