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Why does my dog shake, pant, and lose vision after exercise?

Updated On September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Male | neutered | 3 years old | 100 lbs

After running my dog hard in the yard during play he started shaking and looked like he lost his vision. He laid down for 10 mins panting super hard and you could hear his heart pounding. This happens any time after long extreme play. He had possible liver shunts before. Could this be part of the issue? Should I be concerned? I am worried I won't be able to afford a bunch of test on him.

1 Answer

Most Helpful Answer

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Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on February 14th, 2017

Yes that could be possibly be secondary to a epileptic type of episode (eventually provoked by a liver shunt) or due to pain/discomfort due to intense exercise (it should not happen everytime though). Metabolic type of problem related to muscle fatigue is suspected. I would contact your veterinarian for a check up and eventually have Gunner checked by a neurologist. Neurological examination is not invasive/expensive at all and initially only blood tests will be needed.

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