swallowing

My dog has been lip smacking along with swallowing/yawning constantly for the past 3 months. This started very abruptly 3 months ago so I took him to the vet and hospitals. He has had xrays, ultrasounds, CT Scan, endoscopy, blood work, etc. Everything has basically come back normal. We've tried...

For a while now (on and off), Acadia (male, 1 Yr) will get up from lying down, and make swallowing sounds (and cough sometimes). His stools have also been sort of "unstable" - at times with mucous, at times somewhat loose. The Vet did some tests and found nothing. Treated Acadia with Otomax and...