You enter the first pet room, labeled Siren with a gold plaque. Carefully opening the door to prevent the creature from escaping, you spot a large crustacean in the corner underneath a hanging potted plant; It's bioluminescent light gently pulses as it sleeps, eyes closed and happily clicking it's claws.
You notice a note propped up against the blue paper crane:
"Ah, Siren, my beloved baby; it was by far the hardest to tame, but it's loyalty is unmatched. Be careful caring for this one in the day, it's nocturnal! ~Ray T."