The State University of New York states that animals reproduce by several sexual and asexual methods, with sexual reproduction, defined as the production of gametes with half of each parent's DNA and their union into dip... More »

Although sexual reproduction is a more common method of reproduction among animals, a few species, such as starfish and sea anemones, produce offspring via asexual reproduction. Asexual reproduction, in contrast to sexua... More »

Most millipedes reproduce sexually via internal fertilization. The precise method differs between species and may or may not involve courtship behavior or the use of pheromones. More »

Jellyfish reproduction involves both sexual and asexual processes: the fertilization of eggs, the release of hatched larvae and the asexual cloning of these larvae to produce infant jellyfish. The life cycle of a jellyfi... More »

Being mammals, rats use a very similar method to humans when it comes to reproduction. Unlike humans, however, rats can breed much quicker because the gestation period of a female is roughly 21 days. More »

Annelids are capable of both sexual and asexual reproduction. The majority of annelids are hermaphroditic and have a set of functional male and female sex organs. Some species reproduce primarily by budding, while others... More »

Planaria are able to reproduce either sexually or asexually, depending on the species and the circumstances of reproduction. Sexually reproducing planaria are hermaphrodites, and mating consists of partners exchanging sp... More »