Hobbes went to a new dog park today. I get off work really early (I start at a ridiculous hour though) so I figured there wouldn't be to many other dogs, and there weren't. Just a great dane, pug and a husky, All the dogs seemed to get on good, Hobbes even ignored the pug how was running around like a crazy fool. Hobbes was wandering around, did zoomies by himself for a bit, marked everything in his path. It looked like he was having a good time, but when he came up to me after a few minutes I rubbed his ears and I felt this weird vibration. It was in both ears. I checked to see if there was a bug in there but nothing. He took off again and when he returned to me same thing. It was constant and felt very strong. I kinda freaked out and left the park. As soon as we were in the car it went away. It's been several hours and has not returned.
Has anyone ever experienced anything like this? Could this been caused by nervousness, excitement, or could this be something else?