When dogs play they are engaging in mock combat and there are certain behaviours that dogs use to tell each other that what they are doing should not be taken seriously. Dogs are usually aware of these signals but we are not and some people mistake dogs for fighting when in fact they are playing. Let’s look at how to tell the difference.
To give you a better idea take a look at a healthy play session in progress between Nemo and Dug. Notice how most of the behaviours in the video you will find in the ‘playing’ column of the table above.