| 
  I think the harm with a too large harness is it gives the pup room to wiggle out of it, which could result in running away and possible injury. Sounds like the harnesses she was using were either a horrible material or too small or a combination of both. Good luck with your friend, if she doesn't believe you about the weight you could show her the health chart that are posted on pretty much every vets wall that I've been to lately.  |