All Creatures Great and Small Rating: Dog Tales: The Making Of Man’s Best Friend Rating: Hello Tristan! Good day to you, Mrs Pumphrey — and, especially, welcome to Tricki Woo. Though his fringe is less extravagantly floppy than his predecessor Peter Davison's, Callum Woodhouse is the perfect actor to play Siegfried Farnon's boozy reprobate of a little brother, Tristan. Her …