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A good and outstanding presentation in an easy-to-understand language. Thanks a lot.

I love how this video will keep playing right after the other, so you can see it every few seconds & watch it as many times as needed! Perfect!

Thank you so enlightening. Since my terrier has been having more 'wild' exercise her confidence and well-being seem to be so much better now. Having read this I feel I haven't just imagined it

Excellent, thanks very much.That is probably the most well researched and presented UA-cam video I have seen. My parents had a 2 year old guide dog that could not complete its training due to a joint issue, its training and excercise regime had been perfect.

So good! Great to have robust, science based advice to work off next time we’re lucky enough to welcome a new puppy into our family. I now realise that what we were told in the past were just half truths at best, and dangerous myths at worst! 😳

Another outstanding review from Master Farrell. Keep it going please :)

Most pet dogs diagnosed with clinical hip dysplasia suffered long term clinical signs. Owner assessments suggested that 42-66% of affected dogs experienced lasting effects, while veterinary experts identified physical abnormalities in 71-96% - pubmed.ncbi.nlm.nih.gov/17435096/

University of Florida researchers crossed dysplastic Labradors and normal greyhounds to produce a colony of hybrid ‘greyadors’. Around half of first-generation greyadors developed hip dysplasia, but crossing first-generation greyadors with greyhounds reduced the incidence to 1 in 38 - pubmed.ncbi.nlm.nih.gov/12693530/

What is ‘heritability’? en.wikipedia.org/wiki/Heritability

Insights into morphology and disease from the Dog Genome Project - pubmed.ncbi.nlm.nih.gov/25062362/

Treadmill tests of French bulldogs, Boston terriers, Japanese chin, Pekingese, Affenpinscher, and Brussels griffons proved that harmful genes hide in plain sight: 3/10 dogs with brachycephalic obstructive airway system (BOAS) grade of 0 or 1 failed the fitness test - pubmed.ncbi.nlm.nih.gov/37958168/

University of Pennsylvania researchers showed that lean Labradors had a 5-fold lower risk of hip dysplasia, a significantly lower risk of arthritis, less severe chronic pain (which occurred relatively later in life), and an average lifespan which was 1·8 years longer than their overweight littermates - pubmed.ncbi.nlm.nih.gov/11110459/

A 1975 study funded by the NIH found that crate-confined German shepherd dog puppies were less likely than unrestricted puppies to develop hip dysplasia. The author’s actual conclusion - that a wide-based stance limits dysplasia - might have evolved into the fallacy that exercise restriction prevents hip dysplasia - pubmed.ncbi.nlm.nih.gov/1224531/

Incline treadmill running for 4km/day, 5 days/week for 15-weeks produced subtle improvements in cartilage quality in beagle puppies - pubmed.ncbi.nlm.nih.gov/3278079/

Puppies who ran a daily marathon 5 days/week for a year showed no evidence of developmental joint disease. The only difference between marathon-running puppies and a control group was focal superficial cartilage matrix change - pubmed.ncbi.nlm.nih.gov/7692860/

The Rarámuri, whose children and teenagers participate in a long-distance running tradition have significantly lower rates of joint disease compared to Australian Aboriginal communities where children and adolescents don't have a similar running tradition - pubmed.ncbi.nlm.nih.gov/7692860/

Long-term research on wolves in the Superior National Forest - www.wolf.org/wp-content/uploads/2013/09/301ltresearchonwolvesSNF.pdf

If exercise caused hip dysplasia, wolves wouldn't have survived for 750,000 years and domestic dogs wouldn’t exist - pubmed.ncbi.nlm.nih.gov/6908989/

Guide dog charities’ success reducing joint disease prevalence owes everything to careful breeding and nothing to limited exercise - pubmed.ncbi.nlm.nih.gov/26616425/

When Nicolas Cage appears in a movie, people drown in swimming pools - www.tylervigen.com/

A study of 325 Swedish Labradors provides precisely no evidence that chasing sticks and balls causes abnormal joint development - pubmed.ncbi.nlm.nih.gov/16772494/

Slippery surfaces have no significant effect on the prevalence of hip dysplasia - pubmed.ncbi.nlm.nih.gov/15757132/

A team of Norwegian researchers suggest that young puppies should not be allowed access to stairs without providing any evidence that stair exercise causes harm - pubmed.ncbi.nlm.nih.gov/22620698/

Researchers from New Zealand showed that dogs born in the autumn had a lower incidence of hip dysplasia - pubmed.ncbi.nlm.nih.gov/22191435/

People tend to gain weight in the winter and lose it in the summer - pubmed.ncbi.nlm.nih.gov/31093925/

Small changes in body composition make a big impact on health - pubmed.ncbi.nlm.nih.gov/11110459/

One of the best resources on responsible sporting dog exercise comes from agility dog trainers. If you’d like to learn from someone you can trust, I highly recommend this short video from Naarah Cuddy - ua-cam.com/video/x_NREcvS_Uo/v-deo.htmlsi=ItVFlV4wdh4MXAWS

The decline of play and the rise of psychopathology in children and adolescents - files.eric.ed.gov/fulltext/EJ985541.pdf

The importance of early life play for the development of behavioural disorders in domestic dogs - brill.com/view/journals/beh/155/2-3/article-p83_1.xml?language=en

My girl had this surgery in Dec 5 23, shes back to running and playing like normal. Ocassional favor of the leg as it seems to get stiff after a long sleep. Im sure like humans feeling a surgery spot after inclement weather, she does too. Very accurate vide to our experience. The restriction was diffuclt, but very necessary. Short frequent walks, linger walks, adding hills, not letting her run, not letting her jump. Crated for the frist week(ish). She eventually learned to escape her cone, had to fasten it to her colar. Slept next to her crate, someone was with her always the first couple weeks. eventually restricting her to one room while at work, sleeping on the futon with me. It was very low so she didnt have to jump up and down. Shes been back to regulsr activity for a couple months, and back to daycare this month. Thankful to the skilled surgeon that helped her and fixed her torn CCL. Shes an active girl that loves hikes, long walks, trail work days, canoe trips, and just chasing a ball or the occasional rabbit.

A University of Pennsylvania study showed that overfed Labradors had a 5-fold higher incidence of hip dysplasia, a significantly higher risk of osteoarthritis in multiple joints, and a significantly shorter lifespan - pubmed.ncbi.nlm.nih.gov/11110459/

Obesity quadruples the risk of cranial cruciate ligament rupture - pubmed.ncbi.nlm.nih.gov/21651558/

The epidemic of canine obesity and its role in osteoarthritis [2012 review article] - www.ijvm.org.il/sites/default/files/obesity_osteoarthritis.pdf

The fear of failure feels stronger than the potential joy of success, even if the benefits of success far outweigh the drawbacks of failure - journals.sagepub.com/doi/full/10.1177/0963721418806510

People with two copies of the fat mass and obesity gene (FTO) are more likely to remain hungry after eating - pubmed.ncbi.nlm.nih.gov/23867619/

One-in-eight Labradors carry a gene mutation which makes them more food motivated than unaffected Labradors - pubmed.ncbi.nlm.nih.gov/27157046/

Dogs with the POMC mutation had around 25% lower resting energy requirements - pubmed.ncbi.nlm.nih.gov/38446876/

BMI heritability for children with two copies of a high-risk obesity gene living in high-risk home environments was more than double the heritability for those living in lower-risk environments - pubmed.ncbi.nlm.nih.gov/30285028/

Diet versus exercise in “The Biggest Loser” weight loss competition - pubmed.ncbi.nlm.nih.gov/23404767/

Burn: The Misunderstood Science of Metabolism, by Professor Hermann Pontzer - www.goodreads.com/en/book/show/54734969

Average daily energy expenditure of traditional Hadza foragers was no different than that of Westerners after controlling for body size - pubmed.ncbi.nlm.nih.gov/22848382/

Outlive: The Science and Art of Longevity, by Peter Attia - www.goodreads.com/en/book/show/61153739

Arthritic people have significantly higher energy expenditure per unit time than healthy people - pubmed.ncbi.nlm.nih.gov/23292190/

The metabolism and body composition of three dog breeds and their relationship to life expectancy - pubmed.ncbi.nlm.nih.gov/14570234/

A review article of the nutritional requirements of exercising dogs - pubmed.ncbi.nlm.nih.gov/9868242/

Weight loss improves pain and function in people with hand arthritis - pubmed.ncbi.nlm.nih.gov/18831740/

Super-lean genetically engineered mice with lipodystrophy (LD) are not affected by post-traumatic osteoarthritis - pubmed.ncbi.nlm.nih.gov/33443201/

7/10 arthritic dogs and 4/10 dogs without an arthritis diagnosis were administered at least one type of joint supplement, and overweight dogs were 50% more likely to receive a supplement - pubmed.ncbi.nlm.nih.gov/35958315/

Social norm and health messages have a limited impact on vegetable consumption - pubmed.ncbi.nlm.nih.gov/30287232/

Loved this, after my lovely girl was diagnosed with a brain tumour the neurologist said as I left if she was my dog I'd operate, and it stuck with me and I felt such guilt after sharing and talking with my primary vet we decided together for palliative care which I really appreciated this talk made me feel better about my decision.