How many season 3 appearances by Morgan the Dog?
CREATE TABLE "character_appearances" (
  "character" text,
  "played_by" text,
  "season_1" real,
  "season_2" real,
  "season_3" real,
  "season_4" real,
  "first_appearance" text
);
SELECT MAX("season_3") FROM "character_appearances" WHERE "played_by"='Morgan the Dog';