User blog comment:Dutch3ag1e/Dino Psychologist/@comment-5051663-20120627045049

Watching a teen stegosaurus and a teen ankylosaurus walk through each other, it was hard to tell whether they were trying to mate or fight.

Dinos seem to walk through each other a lot more in the Fusion Building. Perhaps because they are fusing, or perhaps because the building is smaller and there is less room for them to walk around.