My Little Pony (Dragon Transformation and Age Progression)

Oddly enough, no ponies are involved in this transformation, taken from episode 36 ("The Secret of My Excess"). Instead we get a dragon named Spike. He's a child-sized and cutesy, until he starts getting greedy and undergoes what can only be described as monstrous dragon puberty, complete with gigantic growth spurts, a deeper voice, and increased aggression. This lengthy clip has been awkwardly assembled from various bits of the episode. Sadly, the final stage of the transformation occurs off-screen.