Baby, ninja and prada are a year apart from each other in that order and beau is 9 months old. Originally prada was left alone all day when my ex was at work then we decided to get beau prada at that time was 2 1/2 yrs old they are the best of friends prada seems so much more happy now! Prada and beau share the same mommy diff dads. I always think 2 is better than 1! Seems easier they entertain each other even when you're home.