My 4 years old died today very suddenly. One minute he's being his mischievious self, the next he is collapsing on his side and meowing distressfully. I rush to him to see what's going on and very quickly he appears to be gasping for air and then just goes completely limp and unresponsive. My usual vet is a 2 minutes drive away from my home, but is closed on sunday, however the location is also the vet's private home, so I rush there just hoping. I get an answer but all the vet can do really do is tell me my cat is dead, possibly from a cardiac arrest. Now I'm really just enraged I never learned pet CPR or that this didn't happen at a time the clinic would have been open and more helpful. I brought him back home for now and am due to bring him back in the morning. I did some research and it does look like a cardiac arrest, dilated pupils, blue gums, etc. however I'm wondering if I should get an autopsy done. I don't really the know the expenses for it, or if I should place my baby in the fridge in the meantime. I'm a real mess, and need advice.