When I'm sitting down and Cucumella climbs on my chest with her head close to mine I can hear something like a breathing noise coming from her chest. She doesn't open her mouth gasping for air or seem at all distressed but I often wonder if this is normal and all cats do it? She looks quite healthy to me; she eats and drinks well, has no difficulty climbing up fairly high furniture and runs very fast if caught misbehaving like climbing into the kitchen sink. She is 9 years old. Many thanks for any help. Best wishes to all.