If your dog can't walk on it's back leg suddenly, it's most likely due to injury. But sudden lameness can also indicate a neurological issue.
Front Leg Injury in Dogs - Signs, Causes, Diagnosis, Treatment, Recovery, Management, Cost
subject Necessities poverty old dog back legs collapsing suddenly And team Discriminate telescope
How to Tell if Your Dog Is in Pain: 12 Signs
subject Necessities poverty old dog back legs collapsing suddenly And team Discriminate telescope
My Dog is Wobbly and Off Balance: 7 Reasons Why - Dr. Buzby's ToeGrips for Dogs
What to Do When Your Dog Constantly Rubs Its Face
Why Is My Dog Limping? – American Kennel Club
Why is my dog staggering and falling over?, Matthews Emergency Vet
IVDD grades 3 and 4: treatment options and home care – The Rehab Vet
My Dog Can't Walk on Its Back Leg Suddenly: What Happened?
Sudden Hind Leg Weakness in Dogs
Dog Paralysis Back Legs