Ask a Dog Vet and Get Answers to Your Dog Health Questions
I am sorry to hear you are worried about Cornelius. I am a veterinarian and will do my best to help. Yogurt might help, but many dogs do not tolerate milk products. I would recommend a probiotic made for dogs, to get the beneficial bacteria, such as Proviable or Fortiflora.
Have you had any blood tests done, or a stool sample examined microscopically for parasites?
How is Cornelius doing?