CREATE TABLE table_53408 ("School" TEXT, "Mascot" TEXT, "Location" TEXT, "League" TEXT, "Enrollment" FLOAT)

What is the Enrollment where Cougars is a Mascot?
SELECT SUM("Enrollment") FROM table_53408 WHERE "Mascot" = 'cougars'
SELECT SUM("Enrollment") FROM "table_53408" WHERE "Mascot" = 'cougars'