User blog comment:Monkey.D.Sammy/Kaido the Strongest creature in the world/@comment-8207664-20130604205201

Maybe he ate a DF that allows him to control animals and he uses one as a puppet (like Lucci did with his pidgeon). That would help explain his description as "the strongest creature" as well as explain his '100 Beast' title... probably would have a max he can control and since he is so strong 100 makes sense