Good Morning Pauline and welcome! I am Dr. Loretta, a licensed veterinarian and I am happy to answer your question.
Most likely Ollie has suffered an injury to a disc in his back. This is very common in older dachsunds because of their conformation. Since Ollie does not have any digestive issues, this is the most likely cause for his odd behavior. Even though, Pauline, he does not seem to be in pain, the tail between his legs and unsteady gait tells us that he is experiencing pain and discomfort. Since this is deep within the vertebrae, he will not show pain when you touch or palpate these areas. This can happen when Ollie jumps up or down on something or just moves the wrong way. The best thing you can do for now as long as Ollie is eating well now, is to give him aspirin at 5 mg per pound every 12 hrs. This will decrease the inflammation that is causing his pain and start to stabilize this disc. Do not allow him to jump on or off anything, Pauline, or even climb stairs to allow this disc to stabilize. It is best to have your vet examine Ollie, Pauline, to be sure that this is the case and that this treatment is appropriate.
Does that make sense to you, Pauline?
Please let me know if you have ANY other questions. My goal is to give you 100% satisfaction and if you are not yet satisfied, please REPLY so I can clarify for you.
Sincerely, ***** *****
Many thanks for your advice - I had thought the same actually. Will arrange an appointment at our local vets on Monday.
Thank you so much, Pauline, for your kind rating. It is very much appreciated! Even though you have rated, we can still communicate. If you have other questions, please Reply. I am always happy to help. I will send you a follow up in a few days to see how Ollie is doing and if I can answer any other questions.
Have a wonderful day!