My 2.5 year old Toller seems to have outgrown all her problems (guarding, eating poop, snarling at other dogs, hating water, walking poorly, whining in the early morning, and other things I can't think of right now...) But her prey drive is getting worse. My first two Tollers had no prey drive.
When I walk her on lead she bolts on seeing anything small and alive, much faster than I can react. She will burrow into the brush after it (ground hogs, rabbits, foxes) ignoring anything I do to stop her. Yesterday she pulled the leash out of my hand. It all happens so fast.
Oddly, it is much better when she is off lead; which is how I usually walk her. She will go like a bullet after an animal 50' away, but will stay on the trail and come back when I call her. I can live with that, but the trails I can walk her on off lead are way too buggy in the summer. (Interestingly, my first dog chased cars on lead, but he ignored them off lead. Same idea; what's going on with that?)
Any suggestions, other than having faster reflexes?