Lions occupied North Africa, Greece, Anatolia, the Levant, Mesopotamia, Persia and northern India within recorded history. That range explains why the lion dominates the art of civilisations that no longer have any, and it means the imagery is drawn from a real and dangerous neighbour rather than from an exotic report.
Mesopotamia. Assyrian royal ideology made the lion hunt a demonstration of kingship, and the reliefs from Ashurbanipal's palace at Nineveh, now in the British Museum, are among the finest animal sculpture to survive from the ancient world, and among the most unsettling, since the lions are released from cages to be killed. The Ishtar Gate processional way at Babylon is lined with lions in glazed brick, the animal of the goddess Ishtar.
Egypt. Sekhmet, lion-headed, is the fierce aspect of the solar eye, a goddess of plague and of healing. Her festivals involved deliberate placation through drunkenness. The Great Sphinx has a lion's body, and lion-bodied guardians flank temple approaches throughout Egyptian architecture.
Israel. Genesis 49:9 makes Judah a lion's whelp, which is the origin of the Lion of Judah as a title and, through Ethiopian imperial usage, as a national emblem. Revelation 5:5 applies it to Christ.
India and beyond. Narasimha is the man-lion avatar of Vishnu. Durga rides a lion. The Ashokan lion capital at Sarnath is the state emblem of India. The Asiatic lion survived in Gujarat and remains there in the Gir forest, which is why Indian lion imagery is also drawn from a living animal.
China is the exception that proves the rule: guardian lions were adopted through Buddhist transmission, in a country with no lions, which is why they look so unlike lions.