Pets: the documented roster
Pets are the game's items, income, and victory condition at once. Every pet earns Cash per second, and the official description's promise of earnings while you are away applies to the whole placed roster.
The published rebirth table names 30 pet entries across the 16 tiers: Cat, Chicken, Bunny, Bat, Owl, Llama, Zebra, Elephant, Lion, Stegosaurus, YiQi, Mammoth, Velociraptor, Azhdarchid, Gargoyle Bat, Cockatrice, Sphinx, Pegasus, Roc, Hydra, Qilin, Simurgh, Dragon, Unicorn, Golden Kitsune, Gold Unicorn, Gold Dragon, Gnome, Fairy, and Mermaid.
Pro Game Guides counts the ladder as 29 different pets including Fish-type pets and Golden-mutation variants - the one-entry difference comes from Gold Unicorn, Gold Dragon, and Golden Kitsune being mutation variants of base species rather than separate animals.
Mutations: the reward multipliers
Mutations are the game's quality system. The Sportskeeda table published August 5, 2026 documents four: Golden (1.5x income and sale value, Pet Rolls only), Cosmic (2x, from the Cosmic Invasion event where a spaceship abducts base pets and returns them changed), Inferno (3x, from the Volcano event with a small chance to mutate in-place pets), and Admin (4x, only during developer-run Admin Abuse windows).
Two rules shape strategy: a pet holds a single mutation, and mutations cannot be transferred between pets. Mutated duplicates are therefore sellers, while mutated core earners stay placed - both income and sale value scale with the multiplier.
The mutation system arrived in public documentation during August 2026: a Reddit discovery post on August 4 pointed at a community guide, and Sportskeeda's full table followed on August 5.