Wenisrubber,

You did the right thing. Sometimes we have precious furkids come into our lives whose medical history is unknown. It could've been something in his genes that caused a neurological problem or an infection.

Smokey the Elder is right, maybe a necropsy will give you answers, but then again maybe not. For whatever reason, you guys are in my thoughts and prayers. At least Tier isn't in pain anymore.

RIP sweet Tier. Godspeed to the Rainbow Bridge.