What is a defining feature of oviparous animals?

Oviparous animals are characterized by the method of reproduction that involves laying eggs. These eggs are typically deposited outside of the parent's body, allowing the embryos to develop in an environment that can provide additional resources such as oxygen and nutrients from the egg's yolk. This reproductive strategy is seen in many species, including birds, reptiles, amphibians, and some fish.

The defining feature of oviparity is the external development of embryos, which differentiates these animals from viviparous species, that give birth to live young through internal development, and those who rely on a placenta for nourishment during gestation. While diet can vary among oviparous animals, it is not a defining characteristic of being oviparous. Therefore, the essence of oviparous reproduction lies in the egg-laying process and the external development of embryos.