My cat has severe asthma. What can I do to help him?

Dear Most Esteemed and Knowledgeable Kitties:
I read your website for the most part. I’m little tired from the heat. But my search started because I was trying to find what exactly theophylline does. Phelonius, my beautiful black Bombay cat, has full blown asthma. Even the vet hasn’t had a case this bad, so I’ve been [...]