We have gotten to the point where we have started introducing Dieks to our other 2 dogs on leash. They have no problem ignoring each other when crated, or when one is out of their crate, but here is the issue: We start walking and when we get side by side in the walk (After the sniffing has occured and we are forward moving) Dieks grabs hold of a back leg- Hard! He is given a sharp No and walked the opposite way (we haven't started leash corrections as of yet- still trying to form the relationship as he is a bit slow to trust) He is doing this to my older female. She's 6. He and Haz are great at ignoring one another on leash, though Dieks did try to posture over him initially and was redirrected. We introduce existing dogs seperately. There is no growl, no bark, no fixation pior, so I'm just trying to figure out if this is just really poor play behavior or if it is more of a show of dominance or agression. Bella has been higher than Haz in pack ranking until this point (very judiciously though- never any challenging or bullying, no fights to date) Keeping them separtated is probably a long term plan of mine regardless of whether or not this grabbing continues just because it is much easier to read the motives of one dog vs 3, but I would like to understand it a bit more.

First, can you detail how it's happening? If Deiks is on one side of you and the other dog is on the other, and the pace is rapid, how can he get behind you to reach the other dog's leg?

I ask this because there is no time for my dogs even to try a stink-eye with the pace I set on walks.

Releases are different, but you said while walking, right?

My husband had Dieks and I had Bella, DH is not yet very experienced with the speed of which a dog can zip in front of him as Dieks is the first dog he has been really interested in helping with He had "farm dogs" growing up and is still learning, but willing to try! We walk along just fine for a bit with each dog ignoring the other, dogs on our lefts but then Dieks would pull sideways behind me catching husband off guard and latch on. This is all a very new way of introducing dogs to both of us, we lucked out and had instant friends with the other two, so we may be giving him too much time to think, big husband misjudging the strength of Dieks ect.

Oh yes ..... JMHO, but if the dog has a chance to zip behind or in front of the human, that's not the kind of walk I do! LOL

I want the walk to be part of the dog's perception that the human sets the pace and direction and also that the dog has a job to do (hup two three four) that does not allow for such shenanigans. No thinking allowed (for the dogs, I mean). LOL

Yep, I agree- and I do that when I'm alone. It's a work in process for the other half to get the concept though We will be working a lot more on the form of our walks together. Esp. when the kids start back to school next week. (YAY!) Perhaps analyzing the reason more than perfecting the prevention is unproductive.
Now if only I could grow longer legs. Dieks's quick walk is a fast jog for me. I guess my motto : "I only run if I'm being chased" will no longer be an option