IMPA in dogs (immune-mediated polyarthritis) happens once the immune system attacks a Pet’s joints, leading to painful swollen joints and lameness that seems to shift from leg to leg. When these membranes become inflamed, excess immune cells and fluid accumulate In the joint spaces, leading to pain, swelling, and stiffness. https://jasperqzpxz.madmouseblog.com/16414106/an-unbiased-view-of-healthy-dog-mobility