Let’s say that you have the ability to domesticate any animals of your choosing. To have as pets, or whatever your twisted minds can think up. I would have to go with some wolves, King or Timber wolves, simply because they are fucking awesome. And some Walrus for luls. As far as what i would use them for? pets mostly, go hunting with them, watch a pack of walrus take on some buffalo. Oh, as a base line for rules, it has to be an animal that is currently living. NO extinct animals/creatures of any kind. This is not restricted to mammals. ANY creature that is currently living is fair game. (ALSO, NO FURFAG POSTS, or Bestiality.)
I'd probably go the aquaman route and go for mastery of the creatures of the deep. If I had to pick one specifically, probably some species of whale or a colossal squid. Or anything cooler we haven't found yet. Underwater is awesome. I'd live on a boat and sail around the earth with my army of killer marine lifeforms. Or maybe see if I can like strap a bunch of technology onto a sperm whale, I could have a sperm whale battle submarine with guns on it as my flagship. With like a living quarters strapped onto the top of it so I could live on it. Hell go the whole way, a giant whale or squid with armor plating attached to it, maybe a couple of booster engines as well if I need it to go faster, escorted by like a couple of killer whale frigates with torpedo tubes. Then get a bunch of sharks to swim around and use that cool electrical sense thing they have to act as sonar for enemy submarines, also strap bombs to them so I can use them to blow up subs if I need to. Then get a bunch of jellyfish to act as a minefield for when I'm holding position. All of which are surrounded by an interdiction cloud of tiny fishes to mess up sonar locks and scavenge for food for the other animals. This is like, even better than my idea of controlling an army of spiders who grab onto each other and form into a giant spider which I would ride around on top wearing a crown made out of spiders and terrorise small villages. Plus it means I might get a chance to re-enact this image:
Afaik they can only be domesticated for the first 6 months, and the rest of they're life they're completely uncontrollable, so they have to be let go.
Yeah those are extinct as far as we know. Been gone for about a hundred years or so I think. Pretty cool though, kinda like a snake crossed with a dog, can unhinge its jaw if I recall correctly.