So my sister Starr is now 14 and 4 months old. Momster had to take her to see the VET because Starr kept falling over and is having a hard time holding her rear end up. Doctor felt it was due to arthritis and weakness. She has no muscle mass in her back legs anymore. Doctor advised to put her on some pain meds and to make her move a little more so each day momster has been taking Starr and I for a walk around the block. I sure love going on walks and Starr is actually doing a little better each day now.