Last Sunday I was doing laundry and found one of Trouble's stuffed toys on top of the dryer. Most toys they shared, but this pig was hers. I tossed it to Duke and he immediately became obsessed with it. It makes oinky sounds instead of a squeaker sounds. He carried it around all evening and whined. He tried to find a safe place for it and finally gave up, resigned to just laying it beside (or under) him and watching/guarding. He never was aggressive if we were too close, but he would pick it up and move it. He wanted it near him ALL the time. I would trade him a treat to get him to drop it so we could go outside. A couple days later he finally stopped whining when he carried it.
Now, in the last couple of days, the obsession is beginning to subside. He actually offered the toy to Bob yesterday. Are all dogs weird?