So recently my cat has been losing control of her left back leg. It just goes limp and she's unable to use it. What might this be from?
i bet a veterinarian could tell you!
Probably blew out her hip. Go to the vet so they can put a sling in it.
>>267870Also, just for clarification in case you visit some psychopath vet, this is not an emergency that will require you to euthanize your cat. If your vet suggests that, go to another vet who isn't crazy.
Your cat has Lou Gehrig's disease.