As a daily user of the park - and a liker of dogs too - I have witnessed many occasions where dog owners allow their dogs off the lead, but take responsibility for them, and clear up after them too. I have also witnessed dogs off the lead running straight up to and barking at cyclists (on the tarmac) and runners (on the sand track), and the dog owners shouting very unpleasantly at those cyclists and runners ...?? As a walker, cyclist and runner, it does seem particularly unfair that some (thankfully only a few) dog owners do not seem to realise that it is not that other park-users are scared of their pets, but that their pets are also likely to cause an accident if running straight at legs/wheels (I've encountered both unfortunately), with likelihood of damage to the person as well as to the dogs. Like I said I have no problem with dogs, but owners do need to take responsibility for their pets' behaviour, and if they are likely to run at other park-users then take some sensible action - without shouting at the cyclists/runners preferably.