Of all the abnormalities that I've observed, the tamed Megalodons stick out to me. It was almost like they were stray dogs who were resocialized, as though they had a genetic history of human obedience.
Most of my observations have been in the wild, but I think I may learn a thing or two if I observe domesticated creatures more closely. I need to study their diets, their mating patterns, how they socialize with other species... all that.
Rumor has it that there's some woman that's tamed a whole mess of them all by herself, so many that they call her The Beast Queen of the Jungle. Maybe she'll have some useful insights.