Valmiki Ramayana Aranya Kanda Sarga 23 Shloka 10

युद्धे in war, नित्याशुभकराः always ominous, घोरनिदर्शनाः dreadful premonitions, शिवाः jackals, ज्वालोद्गारिभिः as if emitting fire, आननैः with their faces, बलस्य of the army, अभिमुखम् facing towards, नेदुः produced sounds.

Bad omens that always bring inauspiciousness were a dreadful evidence of what is going to happen. Jackals howled, facing Khara's army with their mouths emitting fire.