It's very scary our chow was 13 we knew he had hip dysphasia had hard time getting around but did. Never had accidents inside the house ate no problems and then 1 day it was like a switch flipped could not walk was not crying in pain but you could tell it was bad.
See what vet says maybe its just bad arthritis right now, I know there are days it hurts me to walk with my arthritis.
With our chow kept asking how will I know it's time, when it came down to it, I knew it was the right time and best thing for him before he was in a lot of pain or broke a bone trying to get around
Good luck. Prayers for you and your dog
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