Did you give the Ivermectin or decide to hold off?
Sounds like he's getting a bit cheeky the little rascal. Back outside or you going to kennel him inside for a while?
The inside pullet, is she improving or the same?
What dose and how many days did you give the Valbazen?
Ivermectin may not work either if Valbazen didn't do anything.
For the pullet, was she yawning before you brought her in?
Get a video if you can. It would be interesting to compare the stag and her actions. Is she copying him at all...
Any feeling of fluid in the abdomen?
He's getting better with 5 days of Tylan50 or you didn't finish dosing?
Nice little guy though, he may be enjoying being a house buddy for a while.