Pulling on leash, can this be harmful?

[Remali]

Thank you, that is reassuring to know. I just hate how Bentley pulls, I worry about him hurting himself. Those harnesses sound wonderful!

[Moviedust]

I've asked this question elsewhere, but perhaps others will see it here:

How do you keep the matts from forming with the sense-ible harness?

I just got them for Cedar and Willow and I LOVE them. We've gone for lots of walks in the lovely spring weather. Unfortunately, the harness seems to cause tons of knots in their fur. Any tips???