all preds have WG, Bella is primarily in the breasts, Tulpy is balanced WG but being as small as she is you cant really tell unless you are bella being digested by her to see the growth, Satie is bottom heavy and it gets really obvious with how much clips out of the bottom as she grows, and Ligeska has it happen in her tail, it gets shaped more like a log than an arrow as she digests more stuff
WG also has an effect on speed, reducing it for preds and it's pretty obvious on Bella, as on 2 pred mode where she eats someone as small as Tulpy and all other students she is slower runner than even student bella who is starving... she'll still catch you at the end though due to pixel perfect pathing but the point still stands lol