It might have been the stress of the bath that triggered this. It sounds to me like your cat may have had a heart condition, or thrown a blood clot, or if he was having trouble urinating had a blockage that caused him to pass away. An increase in blood pressure from the stress or warmth of the bath might have triggered movement of a clot or a heart attack.
The dark discoloration of the tongue usually indicates oxygen lack which goes along with a heart issue or a blockage from a blood clot.
The only way you might be able to learn what happened for sure is to have your vet do a necropsy (like a human autopsy) to see if they can determine cause of death.
I'm sorry for your loss!
Edited by NHolmes on June 6 2005 at 1:39pm
__________________
Please press Accept if you find my answer helpful. Want more info? Just reply on your question!
Bonuses for good work are always appreciated!
Thanks for the opportunity to help you!

