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Why is my dog suddenly lethargic, losing balance, and sleeping deeply?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 50 lbs

Second try to make this work. Dog spent the afternoon under a bush, uninterested in normal things. I got her up for supper which she ate enthusiastically, but she had lost her balance. Couldn't walk well, trouble standing, now sleeping profoundly (or in a coma?). Occasionally awakes with a start. We're far from a vet and no car. Bernese mountain cross. (For last few days she's had a sore near right hip, maybe 2 x 4 cm without hair, harder centre. Possibly related.) Ideas?

1 Answer

Most Helpful Answer

Ann Dion, DVM

Answered By Ann Dion, DVM

Veterinarian

Published on August 30th, 2017

Hello and welcome to Petco Pet Education Center, formerly Petcoach. I would be worried about a few things regarding Bindi with what you are describing. One possibility if a bleeding tumor. If Bindi is older (>4-5 years old) this becomes more likely. You can look at her gums to see if they are pink or white. Otherwise, it is possible she got into a toxin (like marijuana) which can make her sleeping, be normal when 'roused' but otherwise be very flat and tired. If she is dribbling urine this is more likely. There are many other conditions as well. I would suggest calling the clinics in your area and finding one that does out of hours calls to see if they could see you. There are many other causes for her clinical signs, and without seeing her or knowing more it is hard to narrow it down. Best of luck with Bindi.
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