Can any wise dog-savvy MNers help me unravel this weird behavioural change going on with my dog?
He's a 2 year old border terrier, neutered, very happy bouncy daft dog. Not in the least neurotic, takes everything in his stride. Has been diagnosed with IBD, is under various medications but still has daily episodes at home where he tears hair out of his tail and haunches and has belly pain (it's not anal glands, all checked and they are empty and unremarkable). Been under the vet for many months and we're still experimenting with meds.
Back in November he started getting a bit obsessed with sniffing the leg of the coffee table (it was new to us from somewhere that refurbs and paints them). Then the next leg and the next leg, over about a week until he was going round and round it, intensely sniffing, whenever he went in the room. He has never marked it and doesn't attempt to. We cleaned it with enzyme remover but no change.
Over the last 8 weeks or so this has developed into him really disliking being in that room at all. He'll might lie on the floor in the doorway or at the edge of the room, he might lie on his mat up in the big bay window and look out during the day, but he won't sit in with us in the evening or lie in front of the log burner (he loved the heat in the beginning but rarely sits near it now).
The sniffing has now spread to dozens of random items across the rest of the house, and he has taken up a strange, crouched, anxious stance when he does it. It tends to escalate in the evenings and first thing in the morning (usually the times he gets belly discomfort).
This weekend we've come away for a few days, to a holiday cottage. And despite the new surroundings, the strong winds making the roof vibrate and the smell of previous dogs in this cottage - he has performed none of his usual anxious obsessive sniffing rituals, neither has he displayed any of his usual belly-pain behaviours. In fact, he hasn't properly relaxed during the day in his own home for 8 weeks, yet in a strange environment smelling of other dogs he's currently snoring on the floor in the sunlight. He's been fussing about his back end every morning for weeks, yet here he's not shown a single sign of it.
That suggests to me that his behaviours are specific to our house. We've thought long and hard as to what has changed, particularly in that room, in the month that it started, and the answer is pretty much everything (carpet, furniture, log burner).
Another possibility is that he got some kind of fright in there one day and associates pain or fear with that room, using the sniffing as a soothing behaviour - fell off the windowsill; or got a static shock from one of the acrylic throws on the couches or from the furry rug; maybe he was snoozing in front of the burner and one of the logs made a pop or rolled onto the glass and scared him; or he got a fright from a loud noise related to the building work going on.
But, even if we were to establish what started it all off, how do we get him past it so he's happy and relaxed in his own home again? 