i wouldent ship greyhound. have you ever had to take one on a trip?? however long the trip would normally take by a car, you can double, triple, and sometimes quadruple that time on the busses due to all the pickups, stopovers, breaks, driver changes and what not that have to be made.
not to mention sometimes you could have to switch 2 or 3 different busses to get to the final destination, and i seriously dont want some uncaring bus driver moving my box at 4am. gentle is NOT in their vocabulary, trust me.
i rode these busses when younger on several trips, and hated putting clothes underneath, nevermind live animals