A pic of my beautiful kitty in June 2007 (12 years ago; left) and a picture of him from 9pm today. He's thinner (he is on meds for a thyroid issue) but still so happy that he's still with me
pic.twitter.com/FMEjbC2bpe
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Dear! 
Even one of my cats had thyroid problem and has been in treatment more than 4 years... she had lost a lot of weight, anyway lived up to 17 years.
Good luck 