How do I know when this doggy is playing or serious?

Just keep throwing that stick or tennis ball. That should take care of his energy level. He’ll last longer than your arm will.

Get one of those throwing sticks.SL500_AA280.jpg or “Dog Ball Throwers.” That will make your arm out-last the dog.

What breed is your dog? If he is a really high energy dog it may be good (and fun) to take him along to agility classes.

No, do not play rough with your dog! First of all, he needs to see you as the alpha and by you playing with him in this way you are sending the wrong signals. Secondly, you don’t want your dog to think that it is ever okay to be rough with any human. As @Darwin suggested, throw a stick or a ball. Those are healthy ways to play for both you and the dog.

Playing rough with a dog is not necessary for the dog.

I guess the question is why do you want to? There is a chance of hurting him or making him aggressive.

There are lots of better ways: hikes, what @gailcalled suggested.

I love to wrestle with my dogs and I always end up doing the alpha roll on them so they know who is the boss.It doesn’t use up much of their energy though.

I am not a great fan of dogs off lead so I do not throw things for mine except in the back yard and yes my arm dies before the dog gets tired.

I run or bike with my young dog, we do at least 5 k a day and most days closer to 10. The most convenient time is around lunch, so it is hot. I set the pace when I run, she sets the pace when I am on the bike. I carry water and we rest when she wants to.That is the best way I have found to wear her out and keep her happy (and both of us in good shape!)

@simone54 Especially since you can’t tell if your dog is serious or playing, stop playing rough with him.

if he shows you all of his top teeth….he’s serious