By Ashleigh Rainbird With royal owners, it’s only right that Mike Tindall and Zara Phillips’ dogs get treated like royalty, which means they get their own plush furnishings and even go to the toilet with a senior human royal. Ex-rugby player Mike reveals his father-in-law regularly wees outside when he lets the dogs out. Mike says it’s “an old man thing” and laughs: “He takes the dog for a walk just to go for a pee himself. Your toilet is there, just there.” His wife Zara’s dad is Captain Mark Phillips, although her mum Princess Anne has since remarried Vice Admiral Timothy Laurence. Mike – wh…