I was holding my ball python (had her for a little over a week now) and she made a big puff noise, like a big breath then big release of air once. I was sitting next to my cat though, like 2 feet from where my ball python was in my hand. She did it once she looked at my cat.

I don't see any signs of RI and this was a first time anything like that happened. Was she scared by my cat? My cat was just laying there licking herself so I didn't think my snake would feel threatened.