Pete's sick again!

[Glacier]

Also, not to sound dumb, but I really don't know - What is PU surgery and what is FLUTD?

PU surgery is basically a kitty sex change. It's done on males who block repeatedly. Pete blocked 5 times in 4 months. The surgery rebuilds their urinary tract, removes the extra kinks in it and essentially their urinary tract becomes that of a female cat.

FLUTD = Feline Lower Urinary Tract Disorder. It's the disease that causes crystals and blockages. Pete has the "idopathic" version as he blocks without an apparent trigger and none of the conventional treatments helped him much. Idopathic is vet-speak for "we don't have a clue why this is happening!"