My asthmatic cat sometimes has coughing fits (the deep sort of
heaving you are talking about) some times when she exerts
herself. Lots of purring or a surprise hiss will do it. Have a chest
xray done. They can see congestion.
Thanks for the info. So far my kitten doesn't
have any symptoms of asthma, so I will wait
and see. She got a thorough exam including
blood workup before spaying a month ago and
everything checked out normal.