Good luck at the next race Sara. Sorry about your little buddy. Our 6 yr old Yorkiepoo recently got lethargic which is just the opposite from her normal. She has low red cell count and is on steroids and antibiotics and has perked up and is eating like a 10 pounder. The long term prognosis may not be good. In the six years that my wife has been retired from teaching the two have become BBF's.