@Basenjimamma:
she will beeline to Otis, while he is laying there chewing his bone, and just attach herself to his neck…and the sounds coming out of her, wow...it is wild to see how she just attacks him..and the other ones as well, but it is much better now..
Firstly, welcome to the new foster. 
Do you know if the place she was fostered in Waco before you got her if they had other basenjis in the house?
I'm wondering because, are your sure that the attaching at the neck and the noise isn't just play? Basenji play is VERY rough & tumble and VERY noisy. The neck grabbing is usually the initiating of play in my house - Ruby doesn't respond to the neck grab very well (usually ignores it until she coughs or growls when she isn't in the mood), she much prefers the basenji dance to initiate play.
It may be that she is a very rough player and Otis isn't used to it - so she needs to tone it down a notch and Otis might need to bring it up a notch ;):D. I'm just wondering if because Otis grew up around calmer different breeds if he isn't now being exposed to proper (or improper :D) basenji play. It does sound like maybe she was taken from her litter mates too soon so she didn't get the proper messages from her siblings about toning it down.
I will say if you aren't used to it, it is hard to judge, and in my house, I only break it up if someone looks like they aren't having fun or it ends up in the dogs "yelling" in each others faces. In my case, my 9mo. pup learned the rough play from my 2 adult basenjis right off the bat (11wks old) - a survival mechanism that the adults are paying for now. 
:rolleyes:
