Can I ask if anyone has a nasty, unsiciable dog, whether that's to humans or other dogs, to please make sure that if using a spike it is FIRMLY in the ground.
Last year my wife was outside the caravan with 2 of our dogs when I was locking the door while having the other dog when I heard a terried yelp and my wife screamed.
A dog opposite had seen our dogs and went for them pulling the screw out of the ground. The nasty mutt had its teeth bared and was about 12 inches from our youngest dog when it stopped, probably because it's owner yelled at it. If it had continued to attack I'm not to sure of the outcome regarding my dogs because it would be hard trying to keep that dog off while holding another and my wife having a lead in both hands.
I know I will court controversy but my own opinion is unsociable dogs shouldn't be in public places ... full stop.
If a person has an unsociable nasty dog get the problem sorted by either having the dog trained, put to sleep or by not taking the dog and putting it in kennels if they want to go away.
This is something I've been saying for years, either in forums or writing to the press, including complaining about dog dumps but because then I didn't have dogs I was accused of being a dog hater by those poor misguided souls who look for excuses to leave their dogs dumps where they fall. One woman, after I wrote to the press about dumps in the park, replied that dogs have been using that land for thousands of years to do their dumps ... DUH! She then went onto say that people should be targetting kids and their graffiti in the park and to leave the dogs alone.
Now I have dogs of my own they at least can't complain that I'm a dog hater just because I wish to walk in a straight line to wherever I'm going instead of walking like a demented crab trying to avoid the dumps :O)