Clifford the Big Red Dog: Be My Big Red Valentine Can you guess what is the biggest, reddest thing about Clifford? It's his great big, lovable heart! Get the fun started with these amazing adventures to a magical land of kings, queens, princesses and treasure! Details Casts Title Clifford the Big Red Dog: Be My Big Red Valentine Release Date 2003-01-21 Runtime 01 Hours 58 Minutes Genres Family Animation Production Companies Unknown Production Countries