The words below share an unusual quality that has nothing to do with their meanings. Can you determine what it is?

SEAS
RISE
NEWS
EYES
PEAS
RAISE
FLEAS

HINT:
PRIZE could be added to the list.

Answer:

The (final) S in each clue word has the Z sound. By changing that to the S sound and adjusting for spelling, you get new words:

CEASE
RICE
NOOSE
ICE
PEACE
RACE
FLEECE
(PRICE)

Credit: Richard Silvestri
MY DOG HAS FLEECE