I had a freaky experience at the dog park and I am looking for your thoughts . . .
So I take Ace (2 yo lab/husky mix) to the dog park several times a week. It is a large lake with a trail around it, maybe 3 miles around. You can have your dog off-leash there. My dog is a crazy fetcher, so we mainly walk around the lake and play fetch. He plays with other dogs sometimes, and he recently discovered that he likes to swim, so we play fetch into the lake.
Typically my dog is one of the most well-behaved dogs at the park. He is well-trained. He sits and waits for me to throw the ball. He comes when called, and sits and stays with no fuss. I can call him off another dog and have him come and lie down.
Tonight he took off swimming in the lake with another dog. It looked like they were chasing animals in the water -- beavers, I think. The other dog got out of the lake and went away, and I called Ace to come, but he didn't. I am not even sure he heard me -- he was in some kind of zone. His ears didn't even twitch when I called his name, although he could see me. He was just swimming around in the lake, changing direction and swimming around. He swam after the beavers. He swam after the ducks. He swam in circles. He swam and swam and swam. I called him and called him for about 10 minutes before he would get out of the lake! And then he jumped right back in and swam around some more, not listening. In another couple minutes he got out of the lake, and I leashed him and took him home. He was freezing -- shivering, poor guy. And this is a northern dog that will lie out on the snow in -5 degree weather. I've never seen him cold like that before.
It really freaked me out! He's usually so good. He's never ignored me like that before. Never. Not anything remotely like that. I mean sometimes he pauses to pee on a tree on his way when I call him, or he continues playing for a couple seconds before he comes, but this was really, really out of character.
What do you think it means? A one-time fluke? A total breakdown in discipline? Is he sick? (He seems completely normal, otherwise. We do have a friend staying with us, and another dog, so his routine is a little off, but he seems completely fine.) Can I take him off-leash to the park anymore, or will he run away? How worried do you think I should be about this?
Please advise!