[anonymous]

Quote “two vets want to do ultrasound an then biopsy, thinking it is protein losing enthoropathy . to my questions , what the point of doing this if the treatment is still steroid / anti inflammatory drugs”,

In my opinion, there is your answer, allow the traditional vet to do the additional testing they need to do to properly diagnose your dog.
Your dog obviously has a serious condition. However, he may respond to treatment and that could include medications such as steroids and anti-inflammatories. The first step is to stop the suffering.

Once the dog is stable they will put him on the least amount and dosages of medication that they can.

All effective medications can have possible side effects. You have to ask yourself, do the benefits outweigh the risks? Often the answer is yes.