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Rigveda 1.32.1
इन्द्रस्य नु वीर्याणि प्रवोचं यानि चकार प्रथमाणि वज्री ।
अहन्नहिमन्वपस्ततर्द प्र वक्षणा अभिनत्पर्वतानाम् ॥

Translation:
I shall proclaim the heroic deeds of Indra, the wielder of the thunderbolt. He slew the serpent, released the waters, and opened the channels of the rivers.

Rigveda 1.32.2
अहन्नहिं पर्वते शिश्रियाणं त्वष्टास्मै वज्रं स्वऱ्यं ततक्ष ।
वाश्रा इव धेनवः स्यन्दमानाः समुद्रमव जग्मुरापः ॥

Translation:
He slew the serpent who lay upon the mountain. Tvaṣṭṛ fashioned the heavenly thunderbolt for him. Then the waters flowed forth to the ocean like cows rushing to their calves.

Indra, the mighty king of the Devas and wielder of the Vajra, confronted Vritra, the great serpent who imprisoned the world's waters. By slaying Vritra, he released the rivers, restored fertility to the land, and upheld Ṛta—the eternal cosmic order that sustains the universe.

Indra here is the primordial force (the expansion force that expanded the universe that which we see now) vs the vritra the compressive force that was trying to hold down the universe from the previous crunch. 

Video source: BISEN (Youtube)

The following rulers are mentioned in the 13th Major Rock Edict of Ashoka:

• Amtiyoko — Antiochus II Theos of the Seleucid Empire
• Turamaya — Ptolemy II Philadelphus of Egypt
• Amtikini — Antigonus II Gonatas of Macedon
• Maka — Magas of Cyrene
• Alikasudaro — Alexander II of Epirus (possibly Alexander of Corinth according to some historians)

The edict dates to around 260 BC, after the Kalinga War. One of the best known versions was found at Girnar in present-day Gujarat, India.
In the inscription, Ashoka speaks about “Dharma Vijay” (victory through righteousness, non-violence and the teachings of Buddha on moral living) with envoys and teachings reaching even the kingdoms of these Greek rulers.

Asiatic lion, Royal bengal tiger, Indian leopard, Cheetah, Snow leopard, Indian gaur, Striped hyena, Sloth Bear, Black Bear, Himlayan Brown Bear, Sun Bear, Indian Rhino, Indian Elephant, Mugger Croc, King Cobra, Reticulated Python, Nilgai, Indian Wolf, Dhole, Ganges river dolphin,

Honourable Mention ->
Saltwater croc, Gharial, Ganges river shark, Bull shark, Vulture, Peacock, Hawk, Eagle, Red panda, Blackbuck