This is a baby? The "tapping" noise and being puffed up almost sounds like he's trying to call... but I don't know how young (or old) they are when they start. I just know my sHEila (who turned out male, lol) started calling not long ago (I've had him since Oct 9, purchased as a baby abt 2" long) and when he started I didn't know what I was hearing as he didn't have much volume since his throat wasn't stretched out yet. He also gets really puffed up before he starts calling.