Since Rhinos don’t own stuff, the only rewards We can offer another critter, Rhino or not, are Consideration and Encouragement.
“They got their just deserts” usually means some appropriate punishment, though sometimes it means reward. So, We assume We need to Earn decent treatment? Our goal is to gratify somebody else? Not Rhino, No thank you, neither today or tomorrow. No. As in, No. Like Never, or even more seldom.
Rhinos prefer to dole out Kindness and Respect as the normal social transaction, day to day, Everyone to Every Other One. Everybody wins.