This animal refers to characteristics of the Greek Empire; ferocity and speed. Alexander the Great established his empire by age 32, which stretched from Greece to the Indian subcontinent, swallowing the Persian Empire along the way.
The 4 heads likely refer to his 4 generals who divided his territory after his death on 323 BC. The generals were Antipater (Greece and Macedon, later ruled by Cassander), Lysimachus (Thrace and much of Asia Minor), Seleucus I Nicator (Mesopotamia and Palestine) and Ptolemy I Soter (Egypt and Palestine).
Created 12 months ago