Cat Respiratory Rate 40. He continued to sleep happily. Start your count from zero.
Our kitten's respiratory rate is 60 breaths per minute but he is very cheerful and has a good appetite. First day after birth (for a full term baby) respiratory rate should be between 40 and 60 breaths/minute newborn up to 4 weeks old: This table is a baseline for healthy, adult cats.
Breathing through the mouth you may notice your cat is breathing through.
He continued to sleep happily. A rapid respiratory rate could be one of many things: It went to 48, 44, then 36. Heart disease, asthma, lung cancer, chylothorax, pyothorax, anxiety, ect.