By Bethan Shufflebotham A previously ‘exclusive’ pet brand is bringing its ‘gourmet’ range of dog dinners to the masses – and it’s perfect for fussy pups. Marleybones was formerly a subscription-only pet food brand, but shoppers can now find it on the shelves at their local Waitrose . The ‘pantry fresh’ dog food brand launched in the posh supermarket chain on February 1, making it easier for owners to trial their dog with the meals without being tied into monthly deliveries. Online, pet lovers can choose from three of Marleybones’ recipes, including Chic Nosh Chicken, Lush Nosh Lamb, and Boss …