Hammerhead Shark
The Hammerhead Shark is a 
Tier 6 Pet, available in the 
Star Pack. At the start of turn it will gain 
gold if there is at least one level 3 friendly Pet. Levelling up the Hammerhead Shark will increase the amount of Gold gained at the start of turn.
Strategy
The Hammerhead Shark is a decently strong Tier 6 unit. Since it doesn't have an active ability, it is best gotten early from a level-up, when there's lives to spare and time to get value of its ability. Alternatively, if there's 3 gold left and nothing better in the shop.
To get the most value from the extra gold, use pets that gain more value if more money is spent during the turn: the best examples are buy-sell teams and food teams. On the contrary, scalers like 
Penguin, 
Monkey, and 
Giraffe get less use out of the extra gold.
Since the Hammerhead Shark requires a level 3 pet, it can be effective with pets that are easier to level up. The best strategy is to keep a tier 1 pet for a long time, until you level-up a pet that gets high use from a level 3, and is worth keeping around for the rest of the game. Additionally, pets like 
Bison & 
Lynx also earn value from the "useless" level 3 pet.
Good pets to get to level 3 with Hammerhead Shark are 
Starfish, 
Seal, 
Swan and 
Bird of Paradise.
Since the Hammerhead Shark doesn't get value from its stats, keeping it weak and pivoting to stronger pets later might be wise. Every turn (n) you keep it for nets a Gold profit of 1 + 3n at just level 1. Level 2 can be strong, but it is a large commitment. Keeping two Hammerhead Sharks separately can be a good way to transition into levelling it up.
Trivia
- Before being released, the Hammerhead Shark's eyes were much more lopsided.
Gallery
The standard sprite of the Hammerhead Shark
The classic sprite of the Hammerhead Shark
The old sprite of the Hammerhead Shark
