Morning I go walking with my friend & her saluki/lurcher (rescue pup). She’s mostly lovely and friendly, but very territorial of her sofa and very nervous and aggressive to middle aged men and dogs she doesn’t know in her house. When we walk her we take her away from the footpaths so she can run (like the wind!) in the rough. She does a play bow to every dog she sees and has spot-on recall every time...apart from if a runner gets too close - which my friend attempts & seeks to avoid but this obviously doesn’t always pan out. She will chase, jump, bark and go to nip at their hands. For me (a non dog owner) and the runners, it’s quite alarming and I’ve stressed this to my friend as I’m worried if she goes for someone and gets them, the consequences may be dire for all involved. My friend says she’s only playing (I have no idea on this) and won’t hurt them but a runner shouted the other day that the dog should be kept on a lead & I see their point. It’s also sad to keep a dog with that much energy on a lead. I think she actually doesn’t know what to do about this or how to train her out of doing it, and as I say I don’t own dogs do have no idea what to advise apart from training school..?Could anyone please offer any advice on this particular behaviour/situation that is a little more clued up than me?! Thanks in advance.