I don't actually "foster" like on a regular basis. I took the one dog - 3/4 poodle, 1/4 malti - because my friend was so unsettled, and for a while actually homeless but living with relatives. Her other choice was a shelter and none of us could stand that. I've always had my own dogs, including the German Shepherd that gave birth to ten puppies - that was fun. I don't really miss the little guy because he was sooooo happy to be able to get in the car with his MUM for the first time in 18 months. Grinning from ear to ear, literally. I recognize a lot of Nikki's behaviours now, having had one of those around for that long. I hit on a one word command that works for almost all situations - STOP! He stops barking, stops jumping on people, stops whatever he's doing. Of course the command had to be accompanied by physical restraint (my hands) until he got it, which was about two days.
I learned with the GSs that I had to be leader of the pack from the get-go or relinquish that position forever, altho I think I'm a pretty tolerant leader, especially with the little ones. So anyway, I'm looking to see if I really do want my own again, having second thoughts already, except about volunteering at the shelter - that may be enough for me.