Yes, COYOTES is a Scrabble word!

Letter values in Scrabble US: C 3, O 1, Y 4, O 1, T 1, E 1, S 1.

Is it a valid word?

COYOTES is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

small wolf native to western North America
someone who smuggles illegal immigrants into the United States (usually across the Mexican border)
a forest fire fighter who is sent to battle remote and severe forest fires (often for days at a time)

Also: prairie wolf, brush wolf, canis latrans.