Scents

A Scent is a bump that female Dinosaurs get on the back of their heads, which have a smell that's really disgusting to all male dinosaurs except for the male dinosaur who the female in question will end up marrying. (These male dinosaurs have a tendency to think that the scents smell like a new car.)

Charlene Sinclair got her scent in Scent of a Reptile, and became so horrified and disgusted with the male who the scent attracted that she attempted to get it changed, first by considering surgery that turned out to be a scam, and later by a special type of plant that helps change scents. Unfortunately, that type of plant was destroyed, but Charlene's scent eventually changed, making Charlene the first known female dinosaur to have her scent changed naturally.