This is so odd... I describe Tinkerbell as a dachshund in a Yorkie suit too! On her card at the Humane Society it was stated she had Anal Gland issues... ??? When I inquired about her, they said she had been adopted out twice and returned
and that she would need to have her glands expressed 2x week.
We took her to the vet, before going home, and lucked out as the previous owner used the same vet so we were able to piece some of her history together. She had been recently spayed, and the vet recalled the lady had called her numerous times complaining (and crying) about the anal glands leaking, and was at her wits end. Hence her return to the HS.
We took her home and let her settle in. I began to evaluate her behavior, as I knew animals involuntarily release their anal glands as a response to fear or sudden excitement, in addition to when they have a BM. She was previously in a home with 5 children, ranging in age from 3 to 12 years old.
Tink was very active, actually too active. All she wanted to do was play. I played with her for a bit, and noticed her level of excitement kept escalating, and she knew to bite the hand that held the toy to get it. I was beginning to get an idea of what I was up against. So far though, no anal gland issues.
First, I needed to work on her excitement and biting issues. At the level of excitement she was reaching, I would expect the glands to release. So I began teaching her that down time was good too. Just holding her in my lap and having her be calm. It took a few months, but now she'll come to either one of us seeking to be held and cuddled with. The biting came under control and she practices bite inhibition while playing now, but the most effective thing I did with her was to cut off the playtime before her excitement became so elevated that she would lose control.
We have had her now for close to 2 years, and I have only had to express her anals 2 times, and never witnessed hers leaking or self expressed. Possibly behavior modification (limiting playtime), exercise (walks) and diet changes could have helped, IDK. I do add string beans for additional fiber to their food. I wonder also if it was something that occured bc of her spay surgery and then resolved on it's own. She also had two courses of antibiotics for UTIs and I put her on probiotics and a better diet early on (within two months of getting her).
I don't know if any of this helps you in your situation, I hope it does. Also, a tip: Dental solution on a cotton ball can be used as a quick cleanup for anal gland juice... it will kill the smell. Also, I check her glands regularly but never express them unless they are really full, I don't try to express them to see how much I can get to come out.