Any ideas on this one?
I have two dogs that won’t stop rough play when on a walk. They do not do it at home or in the garden however on a walk they are constantly chasing, biting, growling and barking at eachother. It starts the second we leave until we get home and gets tougher as the walk goes on. Eventually the play gets so rough one dog takes offence and yelps/gets angry and the play stops for about 5mins then starts up again.
I would say it’s younger dog instigating it. She stands infront of older dog and bites at his neck until he relents and joins in. Saying that he also can be seen barking in her face. They also ‘race’ while barking and body slamming eachother 
I wouldn’t mind so much but neither dog listens to a word I say, won’t recall and won’t stop when I ask. They also look very aggressive with all of the noise and nipping 
The only way I can stop it is by putting them both on leads for a timeout once I’ve managed to catch them (private land so no worries on that front!)
Indivually both dogs are fine to walk. They are very friendly, get on well and play with other dogs normally-they reserve the stupid behaviour for eachother!
Is there anything I can do with this or will I need to keep them on lead forever?
Is it normal for play to be this all consuming?