I've been in contact recently with a woman from Waveland who I first met in September, helping to locate her three dogs. She told me that she found the remains of one - a 17 year old Chow-Shepherd mix. She also found and was reunited with one of her cats, who tragically died six months later from heartworms. Heartworms are rare in cats, and cats are not usually tested. She had an autopsy done on her cat who was fine one minute and dead the next.
If your cat was rescued after Katrina, or if you adopted a Katrina kitty that had been wondering around for some time before being trapped, consult with your vet about having them checked for heartworms.