The intrinsic value of a human or any other sentient animal comes from within itself. It is the value it places on its own lived experience, valuing it as an end in itself. Intrinsic value exists wherever there are beings that value themselves.
Intrinsic value is considered self-ascribed, all animals have it, unlike instrumental or extrinsic values. Instrumental value is the value that others confer on an animal (or on any other entity) because of its value as a resource (e.g. as property, labour, food, fibre, "ecosystem services") or as a source of emotional, recreational, aesthetic or spiritual gratification. Intrinsic values are conferred from within an animal, and are therefore not directly measurable by economists, while extrinsic values are conferred from outside and can, in principle, be measured econometrically.
The phrase "intrinsic value" (often used synonymously with inherent value) has been adopted by animal rights advocates. The Dutch Animal Health and Welfare Act refe