I would not like to think someone had a dog to leave it all day, but people do, However you couldnt have a puppy as it would need feeding three/four times a day depending on how old it is when you have it, and then you need to be there to house train it. Having said that, if you can take a dog out before you go to work and when you return, and you are thinking of taking in a rescue dog, that may be facing a death sentence, it would be a nice thing to do, and you could all benefit if you enjoy dogs - Especially if you are prepared to get someone in during the times you are at work to take it out. Good luck !