Brady got very sick on June, 16 2016. He kept stumbling and falling on his side, then he suddenly threw up very badly. We brought him to the vet's immediately after he got sick. The vet is 99.9% sure that he has Old Dog Vestibular Disease, or Vertigo. This video is the second day after he was ill. At first, he seemed very clingy and anxious about a month or two before it happened.

Update: Sadly, Brady passed away on January, 7 2018. He was suffering from Degenerative Myelopathy and other health complications. By the time we reached the Veterinarian Emergency Hospital, the Vets checked his vitals and told us his gums were pale. That time, we had to make the most difficult decision and let him go and cross the Rainbow Bridge. Rest In Peace, Brady...

Please be aware that you should bring your dog to the Veterinary Hospital immediately if it's stumbling and not doing well, obviously. Old Dog Vestibular Disease is common in older dogs, but can also effect younger dogs. In rare cases, it could be a stroke or a brain tumor. Take care.