I have owned dogs all my life all sizes. I lived and worked abroad and worked on petting farms where I learned about animal husbandry, I also worked in the dairy and beef industry while there. Me and my partner currently have two small dogs. I would normally walk on a nearby beach or forth mountain and min Ryan park. I use a stop,sit and start with a treat style method for leash training. I personally am 6'2 so larger dogs or multiple leashes is not a problem. I have 2 medium sized cages and a pet divider for the back for larger dogs. Day care would depend on the dogs character and ability to work with my own.