My 6 year old lab has been fat and lazy, tired easy and seldom showed interest in anything.
About two months I ago discovered she had a thyroid condition and started her on meds.
She now is 20 pounds lighter and returned to puppyhood.
Every time I take her to the local lake she jumps in and starts swimming after Geese.
Gotta find some way to stop that. grin
Really great to have her back.