What happened to the kitten's sudden shortness of breath?

The death of the landlord's kitten may be due to the following two reasons:

1, cat epilepsy. Usually, when you have an attack, you will twitch and your eyes will quiver. If convulsion lasts for a long time, it will directly lead to poor breathing and death. I wonder if the kitten in the landlord's house has ever twitched before. If so, this is the cause.

2, congenital inheritance, heart disease caused by myocardial hypertrophy. This disease is basically incurable. If it is not treated immediately, it can die quickly, and even if it is treated, it is easy to cause death.

Because there was no vomiting, the doctor didn't say that the kitten had a fever, so poisoning and cat plague could be ruled out.

The above points are basically the reasons that can lead to the rapid death of cats. The landlord is sorry for your loss.