During Gameplay as Sheila the Kangaroo, Sheila can perform a very high jump, at the top of this jump, her legs are in different positions as compared to each other. Kangaroos legs are built so they are always lined up to each other.
In Agent 9's Lab, when you retrieve the egg the first time from shooting out the Rhynoc speedboats, the message "You have already got this egg!" appears. It still counts towards getting an egg, and adds it to the dragon egg count.
At the beginning of the game during Hunter's jump and glide challenge, he tells Spyro that he hates water and doesn't want to get wet. Yet later in the game, in Desert Ruins, Hunter is seen underwater and wearing a scuba suit.