[Peggysu]

I would suggest that every part of the cage where the connecters are have zip ties. You can always use a heavier duty zip tie, some people dog proof and then stand on their own cage to test the stability incase a dog were to be in there and be tempted. You never know how determined your dog might be to get in the cage. In my oppinion you can never be to safe and since you've already expienced it once you shouldn't have it happen again.