We live in the country, the dog would be nominally 12 year old ds's ( but I know that I might end up.......etc) We have a small garden but mile and miles of good walks. There's usually someone home, but we are out and about a lot- specially at weekends, where we do a lot of watching children do sporty stuff.....does a whippet sound like a suitable breed? He is a rescue pup so would be young if he comes to us.