Please get blood work done immediately. The first thing that came to my mind was kidney disease. Hopefully that's not it but both of those things are symptoms of kidney disease. The next thing I thought of was EPI. That will not show up with regular bloodwork--you need to get a TLI done.
How are his poops?
Ruth & the 4 Legged Rescue Gang
Rafi the malaroo
Gio & Varda, the krazy kittens
....In my heart: