We're thinking of getting a puppy. At present I work at home, but this may change in the future. In which case any pet would be left at home during the hours of roughly 9am-3pm. Would it be cruel to leave a dog for this long? We have a back garden and could put in a dog flap. Would having two dogs be less lonely, as company for each other? Is there a particular breed that would be most suited to such a scenario, if any? Thanks.