What are livestock?

Livestock refers specifically to domesticated animals that are raised by humans for various purposes, primarily for profit, which includes meat, milk, wool, and labor. This category typically includes animals such as cattle, sheep, pigs, goats, and chickens. These animals have been selectively bred over generations for traits that enhance their productivity and suitability for human use, distinguishing them from wild animals and organisms found in their natural habitats.

The other options present different categories of animals that do not fit the definition of livestock. Wild animals found in forests do not relate to domestic farming practices. Marine organisms used in aquaculture refers to species such as fish or shellfish raised in water environments, which again is outside the scope of livestock. Lastly, animals that live in herds in the wild may include various species that are not domesticated, emphasizing their survival in natural ecosystems rather than in agricultural settings.