Princess Kate's brother James Middleton is opening up about his past mental health struggles, and crediting his former dog, Ella, with saving his life. In an excerpt of his new book Meet Ella: The Dog Who Saved My Life,

James Middleton has opened up about how "wonderful" fatherhood is and how his family, the Middletons, rallied together to support the Princess of Wales during her cancer treatment

James Middleton, younger brother of Kate Middleton, speaks to PEOPLE ahead of the release of his memoir "Meet Ella: The Dog Who Saved My Life." He believes "we have a lot to learn from dogs" and shares why in the book,

James Middleton said he believes his late dog knew his wife was pregnant before his beloved pet passed away last year. Princess Kate's brother has shared how his cocker spaniel, Ella was an "emotional crutch" for him when he suffered from depression.