Answer:

ARGOS

Answer	Crossword Clue
ARGOS	Where Perseus was born
ARGOS	Old rival of Sparta
ARGOS	Longtime rival of Sparta

ARGOS	Rival of Sparta and Athens
ARGOS	Peloponnesian city
ARGOS	Ally of Athens in the Peloponnesian War
ARGOS	Odysseus' dog
ARGOS	Supposed birthplace of Perseus
ARGOS	Rival of Sparta
ARGOS	Ancient Greek city
ARGOS	Odysseus's faithful dog

ARGOS	Sparta's rival
ARGOS	Toronto team, familiarly
ARGOS	First to recognize the returning Odysseus
ARGOS	Rival of ancient Sparta
ARGOS	City in Greece.
ARGOS	Odysseus' dog.
ARGOS	Ancient city of Greece.
ARGOS	City in Peloponnesus.

ARGOS	Odysseus' faithful dog.
ARGOS	Ancient city of Greece, rival of Sparta.
ARGOS	Rival of Sparta and Athens.
ARGOS	Ancient rival of Athens and Corinth.
ARGOS	Greek city.
ARGOS	City of ancient Greece.
ARGOS	City of Ancient Greece.
ARGOS	City of anc. Greece.

ARGOS	Oldest city of Greece.
ARGOS	Greek city
ARGOS	Odysseus's dog.
ARGOS	Odysseus's dog
ARGOS	Old Greek city
ARGOS	Historic city in Greece
ARGOS	City in Greece
ARGOS	Odysseus' smart dog

ARGOS	City in SE Greece
ARGOS	Homeric dog
ARGOS	A foe of Sparta
ARGOS	Agamemnon's home
ARGOS	Ancient rival of Sparta