Well, I don't have a screenshot for this, but an example is in the tv episode The Lone Dinosaur returns, when Petrie sees Doc and Littlefoot from a distance, Littlefoot is about 2/3 bigger then Doc's foot, yet when Littlefoot tries introducing Doc to Chomper, their all 2/3 smaller, and I highly doubt kids suddenly shrink and get bigger in minutes, thats just an example, look at the episode, and you will see what I mean.