Thank you everyone for your input thus far! We had one appointment after I made this post (vaccines & ultrasound). My vet stated that he was impressed at how healthy my dog looks, especially given the current situation. He said typically dogs with this issue will loose weight and will have an odor. As of now my dog has a lovely shiny coat, no odor, is appropriately active for his age (loves walks, will play a bit with a friend, loves going to work with me), his weight and body condition is ideal for his his age, and he seems very healthy overall besides this issue.
The sludge has thickened since his last ultrasound 6 months ago (at this point in time it wasn’t a huge concern), if it does not improve he may need his gallbladder removed. I would like to try to avoid surgery if possible (hoping treatment and diet change work!) but this brings me to my next question: has anyone had any experience with gallbladder removal of their dog? I would love any and all information about Sx and post Sx if anyone has experience…
Again, really hoping we can resolve this without Sx but would love some info just incase it gets to that point