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random collapsing of legs
I own a 4 yr old jrt female. Lately her front left leg collapsed under her while running on grass. I checked for holes but there were none. Then, a few days later I had her outside to go potty and while she was walking around her back righ leg gave out. Then just a day ago she was playing inside and jerked her back right leg up like she did something to it but there was no warmth or soreness. Any idea what could be causing this? My boyfriends seems to think it could be from lack of exercise.