the doge pic was a joke, but there was a real dogecoin symbol in the Crops.jpg morse code.
The last morse code after WOW is ..--. ---, while --- is probably simply accidently a valid morse character and ..--. is not a valid character at all.
Edit: ok, i was wrong, here you can find the code for Dogecoin symbol:
http://en.wikipedia.org/wiki/Morse_code