Many conditions like ear infections, ear mites, head trauma, foreign bodies in ear, hypothyroidism, ototoxic drugs, inflammation of brain, ear drum damage and cancer can cause , vertigo, falling, circling and rolling problems in dogs. Proper diagnosis requires complete medical history, complete physical examination, blood tests, neurological evaluation, urinalysis, blood tests, CT scan or MRI, and spinal tap. Treatment depends upon underlying cause. So, take your dog to vet for proper diagnosis and treatment.