Could Toho sue Wal-Mart? Godzilla-roaring Dinosaur toy found

I you go to the toy store of your local Wal-Mart, and look at the cheap, "kid connection" (Wal-Mart own "Made in China" brand), you'll find a toy set with a red T-Rex along with some other figs. If you press the side of the T-Rex, you'll some thumping of feet sound, followed TWICE, by a very familiar roar. Godzilla's exact roar to be precise.
This should definitely be a copyright issue. Could Toho sue Wal-Mart over this?
This should definitely be a copyright issue. Could Toho sue Wal-Mart over this?