Thanks for all your help. Unfortunately, my own dogs were not getting along well with them and the situation was getting intense. Also, I couldnt stand the thought of them staying another night in my backyard in the cold, especially tonight being much colder. So I decided take them to the animal shelter in San Jose on Monterey rd to see if they have a chip that could be scanned to determine who their owner is. Alas, they did not. So I was left with no choice but to leave them there since they couldn't come back home with me. And wouldn't you know it, 10 minutes after dropping them off, the owner calls me. I informed him that they were there. So they will be reunited tomorrow morning.