My experience with Greyhound is it has to be hand moveable. It goes in the compartments below the seating where the baggage is loaded. I'm not aware of a Greyhound depot with a forklift although there may be some. I shipped a large painting with them 48x40 but it was easily moved by hand. Probably the best way to find out is to call them.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.