I am glad you thought this over thoroughly. Yes, it is very hard with more than 3 dogs and I probably would not foster if I did not have as much help. You see I volunteer at shelters so I can rescue some dogs from death row or very ill or behavior problem dogs at no charge, also the vets office I work for gives me a big discount on my own dogs then they are even more understanding w/ the rescues as I hardly ever have to pay anything for treatment & meds (I probably would have to pay more if I had more rescues but I try not to have more than 1 or 2 rescued dogs at a time). Also I get to bring the rescues to work with me and to the shelter while I volunteer if I have to. And while teaching obedience & agility they can also come if need be. I also help out with my family's business and can bring the dogs there to work with me too. So pretty much my only downfalls are buying food and getting free time to myself. Free time to myself? Hmm what is that? LOL