What is going on in your furbabies little mind? I sure do

I can usually read my two pretty well, but this week with the excitement of getting the little yorkie Bear out of a bad home and his new Mommy Stephanie (SophieandZiggy) picking him up last night, there little world has been kind of topsy turvy.
They were both really jealous of Little Bear when I brought him home Wed afternoon. They seemed to be a little better with him yesterday evening.
I left them at home with daddy when I went to meet Stephanie and when I got home they were semi normal acting. This morning they ate fine, but layed on the big couch which they never do, they are always beside me on the loveseat while I have my morning coffee.
My DH said....they are acting really strange this morning

His thinks that in their minds, I brought in the new pup, he stayed for a little over 24hrs...I left with the new pup and came home without him and now DH thinks that they are afraid they are next to go

(over my dead body) What are your thoughts?? Do you think it is just the stress of the week or could they be afraid they are going to go out the door, never to return?
Hopefully they will be back to normal when I get home from work this evening. It makes me sad to have upset them like this.