Firstly, Welcome to the NEW Petpitcher Forum Blitz. Recommend you introduce yourself in the Member Introduction Section
https://forum.petpitcher.net/forumdisplay.php?f=23 and if you wish to post a growlist; no matter how minute.
VFT- it's normal. All of mine do that. I think it is their way of maximising contact with the food while squeezing the juices out. Think other members can confirm this.