Sperm Whale is not a Crossbred Animal and can only be purchased through the Tiny Zoo Store.
Crossbreeding Sperm Whale with other animals:
The sperm whale is a marine mammal species, order Cetacea, a toothed whale having the largest brain of any animal. The name comes from the milky-white waxy substance, spermaceti, found in the animal's head. It is the largest living toothed animal.