Big cat
From YPPedia
A big cat is a type of pet. Big cats can be bought from the palace shoppe for 100,000 Pieces of Eight and, on doubloon oceans, 100 doubloons.
Purchaseable big cats have a choice of four different species, and 25 different collar colors. Ocean Masters and Ringers can create big cats in several additional color combinations. The white tiger, cougar and black jaguar, candy-striped tiger and gold tiger are limited edition pets, and are only available at certain times.