It's a ranger pet/companion that can be unlocked for free by talking to a npc at Embark Beach or by spending Zaishan Coins/gold or Balthazar Points. It unlocks at level 5 - so you either have to level it yourself or pay to have it's level's and evolutions unlocked. It's classed as a "Exotic" pet by the trainer.
You can check out it's wiki page for more information.
Image taken from the official wiki.
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