Final answer:
Vitamin D found in animal-based foods is called cholecalciferol, or vitamin D3, which is essential for calcium absorption and bone health.
Step-by-step explanation:
The form of vitamin D that is found in animal-based food is called cholecalciferol. Also known as vitamin D3, cholecalciferol is synthesized in human skin when exposed to UV radiation and is the most prominent form of vitamin D in animals. It plays a crucial role in calcium absorption, supporting healthy bones, and preventing conditions such as rickets in children and osteomalacia in adults.