Nose held high up in the air, gaping while moving about ( not just basking) excess saliva and/ or bubbles around mouth, crackling , popping or wheezing sounds, to name a few.
Lmao something similar happened o me, I was really freaked out by a very strange noise coming from what I thought was my chameleon, turned around to see my snorting pug dog behind me gave me quite the scare