I would love advice on which breed of dog would suit someone who has never owned a dog before and has absolutely no doggy experience at all. I am thinking of getting an older rescue dog rather than a puppy. I mainly work at home but would have to leave the dog by itself for two to four hours each day. Also, I could walk him/her for 20 mins each morning and 30 mins each evening. Would that be enough? Thanks to anyone who replies.