Development that occurs inside a female, allowing the offspring to gain nutrients and vital substances from the mother through a [[placenta]]. This is in contrast with [[Oviparous]] development, where the young grow inside of an [[egg]]. | Development that occurs inside a female, allowing the offspring to gain nutrients and vital substances from the mother through a [[placenta]]. This is in contrast with [[Oviparous]] development, where the young grow inside of an [[egg]]. |