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Are e-collars safe? Do they cause cancer? How to stop dog pulling?

Updated On September 23rd, 2025

Pet's info: Dog | English Springer Spaniel | Female | spayed | 1 year and 1 month old | 47 lbs

I'm curious and there are any links to e-collars and cancer in dogs? I have tried positive reinforcement for months with my dog and training her not to pull like a mad man on walks but it isn't working at all. I'm desperate for help but dont want to do anything to harm her. Growing up my dog had a shock collar around out house and she got lymphnode cancer when she was 3 and I remember my mom always blaming it on the collar and it has always scared me since.

1 Answer

Most Helpful Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on February 24th, 2020

No, there are no known links between shock collars and cancer that I am aware of. It sounds like a horrible coincidence for your previous dog. I would recommend working with a dog trainer to teach Bailey how to walk politely on a leash. There is also a brand called Gentle Leader that has both a chest harness and a head harness that will help with pulling. They include instructions on proper use so that Bailey learns to walk politely while using the harness.

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