Willy has been taking meds for thyroid since october 2002. In that time she has went blind and has trouble with back legs, but still gets around. 2 weeks ago she got constipated so I changed from dry food to wet food and gave her metamucil and solved constipation problem. But she has went from 6 lbs to 8 and looks as if she has half a softball sticking out each side and has slowded down alot. Any Ideas on sudden body change.
Your pet should be seen by a vet for a diagnosis. I do not want to speculate but at this age many things can start to go wrong. Good luck, vetcare