Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 5 · Omens
शकुनानि
भयाय दक्षिणं चाङ्गं तथा भुजमदक्षिणम् ।यात्राघातकरो यातुर्भवेत्प्रतिमुखागतः ॥ १६ ॥
In the full Agni Purana this is chapter 232, verse 16.
Sniffing the right side, and the left arm too, brings fear. A dog coming face to face spoils the traveler's journey.
Simple meaning: A dog sniffing the right side or left arm brings fear. One facing the traveler spoils his trip.
मार्गावरोधको मार्गे चौरान्वदति भार्गव ।
A dog blocking the road tells of thieves. A bone, rope or rag in its mouth is bad.
सोपानत्कमुखो धन्यो मांसपूर्णमुखोऽपि च ।
Shoes or meat in a dog's mouth is good. Unlucky things or hair in its mouth are bad.
अवमूत्र्याग्रतो याति यस्य तस्य भयं भवेत् ।
A dog passing urine and going ahead of someone brings fear. Urine on a good spot or tree helps.