Vedanta shows things which can never be seen with mortal eyes. The majesty and supremacy of Narayana who is the Supreme Brahman is the central theme of the Upanishads. However, to see what they show requires the right vision.
The Indian subcontinent is the land of spiritual realization. Here, the cow is revered. The cow is the abode of 3 crore deities and is worshipped daily. Every ingredient provided by the cow is consumed. It is only natural to reminisce about Sri Raghavendra Tirtha when the thought of a cow comes to our mind.