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Bonnie and the Devils´ Device

  • Oct 9, 2022
  • 4 min read

Updated: Dec 3, 2024


Bonnie and Denise

In March 2015, about a year before I was due to retire, a picture of a Border Collie popped up on my Facebook newsfeed ‘Free to a Good Home'. Heart breaking. I tagged my husband into the post not really expecting any response. However, whilst I was in work, he arranged to meet the dog that evening.


She stole my heart the minute I saw her. She was so excited to see us and squirmed her way onto our laps one at a time. The story was that she was born on a farm from working stock, but got kicked by a horse and was deemed unsuitable to work. The lady who had her took her from the farmer on NYE having lost a Border Collie some time ago. Bonnie was about 4 months old at this point. Then, due to a change in personal circumstances, this lady found herself back in full time employment and Bonnie was home alone for about 12hrs a day. After a long chat and many tears, we left for home with Bonnie clinging to my lap, trembling and dribbling not knowing what was happening. That night my husband slept downstairs with her.


The following morning, I took her for a walk before I went to work and got a glimpse of her true persona. It took ten minutes to walk less than 50 metres as she lunged and swung on her lead accompanied by high pitched yelling, with me hanging on for dear life. My street is like catworld and Bonnie has a pathological hatred of felines. Later that day she scaled the 6ft perimeter garden fence in pursuit of a cat across the back and it took an hour to retrieve her. We had been told that her recall was variable but it appeared it was non existent. During the first week Bonnie went over the wrought iron garden gate and slipped her collar whilst chasing cats. Each time it took ages to get her back.


The first time we took her out in the car we discovered her hatred of wheels and in particular bicycles (now also known as devils´ device). Although secured by a harness on the back seat, she would scream and tell at the mere sight of a bicycle and lunge around trying to get at it. Car journeys were a nightmare; walks were a nightmare. She appeared to have so many triggers and such a high prey drive that taking her out became a constant battle trying to control her hysterical behaviour whilst keeping her and me safe.


During our time at ActionPetz we started agility training in the hope it would give Bonnie some focus and although she was quite good when she put her mind to it, she was impatient and vocal waiting for her turn and would then jump out of the enclosed area into the dog park and refuse to come back. It was whilst agility training that I first met Lisa. ActionPetz Cardiff then closed. However, a friend from agility training put a post on Facebook about doing a Mantrailing introduction course so I contacted Lisa and made some enquiries. I was concerned that Bonnie's reactivity to so many stimuli would make her an unsuitable candidate for Mantrailing but Lisa encouraged us to have a go.


On our Mantrailing introduction course it was evident from the outset that Bonnie ‘got the game. For me it was joyous. Here was a dog who had absolutely no interaction with me on a walk apart from the constant battle to do her own thing, transformed into a focused, attentive collie. That was April 2017. Since then we have regularly attended Mantrailing training two or three times a week. Bonnie has grown in confidence and her ability never ceases to amaze me. She is wiley enough to find the shortest trail distance to make her find and is learning to cope with things she finds overwhelming. She still reacts to bicycles and other triggers when trailing but is quick to come back to the job in hand. She has on occasion been so focussed that she has trailed past bikes in close proximity.


Mantrailing has given me a bond with Bonnie which I had come to believe was impossible. Whereas my walks always result in a fight with her over something, Mantrailing is nothing but a positive experience from start to finish. She succeeds and gets praise always. My girl loves it and gets excited from the minute I start preparing the Mantrailing bag. When we are on a trail she interacts with me eager to show me the way. Our training sessions are a bit of a social event where we get to meet like-minded people, who may also have dogs with issues. From feeling isolated and despondent I now feel supported and hopeful.


Lisa Gorenflo, Founder and Head Instructor at Mantrailing UK has a wealth of knowledge about this sport for pet dogs which she imparts with a relaxed, easy style and ensures the training sessions are varied and fun. We get to train in some amazing places some of which are themselves a challenge to find. We have even trailed in a busy city centre with so many distractions (bikes, push chairs, skateboards and, of course, people). Bonnie and I are grateful for the support we have received over the past eighteen months and would recommend Mantrailing as a great way to have fun and bond with your dog and keep fit in the process. There is no doubt in my mind that Bonnie has benefited hugely from Mantrailing and has been able to relieve some of her frustration by just having a job and as such Mantrailing has probably saved my sanity.


Written by Denise

37 Comments


Cole Owen
Cole Owen
Mar 25

Fascinating read on Bonnie and the Devil's Device! Your insights into mantrailing's innovative tech really resonate with me as a dog owner in London who's struggled with training challenges myself—my pup's recall was a nightmare until we nailed the basics. The way this device enhances scent tracking precision feels like a game-changer for building that unbreakable bond and confidence in our furry partners. It's inspiring to see how such tools turn complex trails into achievable adventures, much like how a reliable Assignment Writing Service can transform overwhelming academic tasks into clear, high-quality wins for busy students. Can't wait to try something similar on our next park session—thanks for sharing this gem!

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Understanding what is safety management system helps organisations build a proactive safety strategy. It focuses on planning, monitoring, and improvement. The College of Contract Management explains these elements in a clear format.

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I read the article about the weekend weather for October 20th on ODG, and it gives a good sense of autumn conditions in the Lake District. While it looks like it will be a bit cooler and cloudier, there’s still a chance for drier periods — perfect for walks and outdoor activities if the weather avoids heavy rain or storms. The article notes that it may be possible to avoid the worst effects of storms and enjoy the weekend mostly without serious weather problems, though higher elevations could be windy and chilly. This is useful information for anyone planning trips, hikes, or outdoor time, as warm clothing and waterproof shoes will be helpful, but in some areas the weather may…

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Angus Cox
Angus Cox
Mar 07

What a wonderful story — Bonnie's journey is so relatable for anyone who has ever loved a "difficult" dog! That feeling of dreading every walk, wondering if things will ever click, is something so many of us know too well. What struck me most was how Mantrailing didn't just give Bonnie a job — it gave her a framework to channel all that wild energy, almost like applying structural techniques to a chaotic situation: building focus layer by layer, adding trust, and slowly reshaping how she experienced the world around her. The transformation from a dog who couldn't walk 50 metres without chaos, to one who can trail past bikes in a busy city centre, is honestly incredible. It's a…

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Great interview, but if I'm being honest felt more like 'why I'm still a Calvinist' than 'Christian'. I respect that Kristen's faith tradition is important to her, and she can obviously share to the level she feels comfortable with and no more, but this was a very intellectual conversation. I'd have appreciated hearing more about Kristen's personal faith in Jesus Himself and why that is not shaken despite the attacks she's endured. Shoyoroll RVCA gi

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