Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 5 · Omens
शकुनानि
भयाय स्वामिनो ज्ञेयमनिमित्तं रुतं गवाम् ।निशि चौरभयाय स्याद्विकृतं मृत्यवे तथा ॥ २१ ॥
In the full Agni Purana this is chapter 232, verse 21.
A cow's cry for no reason should be known as fear for the owner. At night it is for fear of thieves. A strange one is for death.
Simple meaning: A cow crying for no reason is a fear sign. At night it points to thieves. A strange cry points to death.
शिवाय स्वामिनो रात्रौ बलीवर्दो नदन्भवेत् ।
A bull bellowing at night is good for its owner. A freed bull gives the king victory.
अभक्ष्यं भक्षयन्त्यश्च गावो दत्तास्तथा स्वकाः ।
Cows that eat wrong things or drop love for their calves are said to bring a loss of the unborn.
भूमिं पादैर्विनिघ्नन्त्यो दीना भीता भयावहाः ।
Cows pawing the ground and frightened bring fear. Wet cows with soil on their horns are good.