"Rhinos actually very readily become ... I would't say 'affectionate' ... but they certainly become very accustomed to being around humans," said Randy Rieches, who manages a herd of white rhinos as Curator of Mammals at the San Diego Zoo. "If you spent enough time with them, it is highly possible that you could cue them [to come when you call]. We do a lot of that here to bring them on and off exhibit; they are trainable ... quite intelligent and figure out things quickly."
Adults stand six feet tall at the shoulder and can stretch ten feet from their sharp horn to the tip of their tail. They are usually three-and-a-half feet wide and can weigh upwards of two tons.
They eat around 120 pounds of grass and other vegetation daily and produce about 80 pounds of manure. But they are easily housebroken, should you decide to allow your rhino inside. Keeping him off the couch may be another matter, however.