Our 20 month old is good with being off - the - lead in the park with me. But recently, with the dog walker, on the last 2 occasions, she has run away! We don’t use a walker regularly (just as and when needed), and our dog seems happy to be dropped-off to the walker. My question is :- Anyone else experienced this? I find it puzzling. I am wondering if it’s the other dogs versus bring one-on-one? Or is it cheekiness?