Just come back from walking our 5 month old lurcher GS with a slightly bleeding arm. We saw another dog in a field who stopped for a sniff but, as he was on his way home, I didn't let her off the lead in case she tried to follow him (her recall is a work in progress). After he had gone, she carried on the jumping she had been doing to him to me. She reaches my shoulders on her back legs and, even with the lead really short, I couldn't stop her. She broke the skin on my wrist and it is smeared with blood - not dripping - but looks a mess. She was also biting at my dress. I just felt powerless and a total idiot, as well as very shaken. After a couple of minutes of me saying, "No, down" etc, she stopped and the rest of the walk was fine. She has done this before, but only a couple of times and it was weeks ago and I was in a coat in trousers so it was easy to just blank her and she stopped. This time it's a really hot day here so I'm in a floaty sundress and therefore vulnerable to attack!
I am sure she acted in play, not aggression, but it has shaken me up. She still jumps up at the dc and has put scratch marks on them, though not broken the skin. She stops if we call her away, but then it feels like she's being given a treat for hurting them. We also confine her to the kitchen if she gets really hyper, which helps, but no real progress seems to be being made longterm.
She has lots of toys to chew and is played with, though she has no interest in 'fetch' etc and play of any length of time results in her jumping up and hurting people. She is walked three times a day for 20-25 minutes.
I have contacted trainers but don't know what to look for them in terms of qualifications etc. Is this type of thing to be expected or are we going wrong/is it a red-flag?