I know that dispondent look *so* well. Apollo will take verybody's toys too. He'll also crawl in between the other pups to get to the "human" first when it's attention time. Basically, he's a stinker!
I've found that the more toys you have available, the better. Yep, your house will look like a tornado hit it most times, and it'll be like walking through a mine field in the dark, but hey, no one here's going to mind a bit!
Also, you might designate a "special" toy as Sahara's. Yes, Kiya will paobably try and take it, but give her you're leave-it command ( I use "drop" but everyone's different) and after a while, Kiya will relax about it.
I've got a house with three male dogs. It's a roller-coaster of "who gets to be top-dog today". I don't interfere in the power plays, so long as they don't cross the "humans are gods" rule, but I've found that they each have their own "special" things, and we all try to repect that. Apollo will always get loved on first, Onyx gets to be in the bathroom with Mom when she's bathing (he's such a perv!) and Zeus always gets to win at fetch. (No contest there, realy, he can run circles around a cheetah, I swear!)