My limit is the 5 we have now. They all have different personalities, and some don't demand as much attention as the rest, but you know they still want it. We can spend a little time with each dog now, but when I wanted to adopt a Doberman last month, my wife pointed out to me that it wouldn't be fair to that dog, or the ones we already have. As it is, the 4 min pins sleep on top of us, or tight to us, and the big bad Rottie sleeps at the foot of the bed, and the minute my wife or I get out of bed in the middle of the night for whatever reason, he's up in the bed (feels he has room without two humans in bed.) Anyway, even with the crew we have now, I sometimes feel guilty that somebody is being neglected, and if we added another dog, someone would definitely be neglected, and it's not fair to that dog or any of the ones we already have.