[@Baklava]
I left that section rather terse because I just wanted to give a general idea, not each and every detail. I felt it would be sort of a lost effort, as one of the two would be cast out in the end. That's not to say I haven't been pondering where each would take Sir Isaac uniquely. I intend to greatly expand the section once his elementos had been chosen, but I'll flesh them out a bit further once I find myself a bit of time for creative writing. That'll be in anywhere from a couple hours to a day or two, though.

[quote=@Baklava]
Please also keep in mind (and this is for everyone) that the ability to communicate with animals is not akin to the ability to control them. While I can see Isaac as being a very persuasive person, he might have a difficult time convincing rare animals to forsake a life of freedom for one inside a cage or enclosure (unless he were to trick them, in which case I would be interested to hear more about why he may not be the kind of person to feel sympathetic to their cause-- is he one to befriend animals or manipulate them?). 
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This is actually one of the things I had thought about in detail. The animal world is not all rainbows and gumdrops - certain animals prey on other animals. Naturally, some animals would be willing to help another dispose of their natural enemies, be they in competition for the same prey or their predators. In the same vein, should one get close to a predator, the predator might be willing to impart some tips on how to hunt for their prey. Personally, I'd ask a snake how to find a bird's nest.