I think it makes sense, with any animal, to follow the logic of what it would have eaten when as and as the breed evolved and developed. With the Yorkies up north of England, I should imagine they would have eaten cooked meat offcuts along with tubular and root vegetables and other scraps off the farmers' tables. I'm pretty sure this diet would have included the odd apple but I'm not sure it would have included citrus fruits because for a long time, oranges and limes etc. were considered rare luxuries only enjoyed by the upper classes. I'm pretty sure I read somewhere too that Yorkies should not be fed oily fish as their livers do not have the necessary enzymes to metabolise the fats and I'm assuming this would be true for any other type of metabolically 'complex' food |