In cats, as in the rest of mammals, lung ventilation is improved compared to
to that present in other classes of invertebrates.
In fact, through the diaphragmatic and intercostal musculature there is the presence of active breathing, followed by a passive exhalation. The two phases can also follow each other with high frequency.
The sense of smell, perceiving others
The cat has a more developed sense of smell than the human one but much less refined than the canine one.
The cat perceives the specific smells of its peers, the sense of smell therefore has a social function.