In seahorses and pipefish, it is the male that gets pregnant and gives birth. Seahorse fathers incubate their developing embryos in a pouch located on their tail. The pouch is the equivalent of the uterus of female mammals. It contains a placenta, supporting the growth and development of baby seahorses.
Seahorses and their close relatives, sea dragons, are the only species in which the male gets pregnant and gives birth. Male seahorses and sea dragons get pregnant and bear young—a unique adaptation in the animal kingdom.
In the entire animal kingdom, male seahorses (and their close relatives) are the only male animals that undergo pregnancy and give birth to offspring.
The uterus would either have to be donated by a willing donor or be tissue-engineered using the male's stem cells and then implanted into the pelvic region. Afterward, an in vitro fertilisation (IVF) procedure would be followed to insert the embryo into the male's transplanted womb.
Beatie had gender reassignment surgery in March 2002 and became known as "the pregnant man" after he became pregnant through artificial insemination in 2007. Beatie chose to be pregnant because his wife Nancy was infertile, doing so with donated sperm.
A person who was born male and is living as a man cannot get pregnant. However, some transgender men and nonbinary people can. In most cases, including cis-men who have sex with men, male pregnancy is not possible.
Persistent Müllerian duct syndrome is a disorder of sexual development that affects males. Males with this disorder have normal male reproductive organs , though they also have a uterus and fallopian tubes, which are female reproductive organs .
True hermaphroditism is a rare intersex condition in which an individual has both testicular and ovarian tissue. The largest numbers of cases have been reported from Africa and Europe.
The structure that is most analogous to the uterus in women is the epididymis in men. The epididymis is an organ made up of a highly coiled tube that stores the sperm produced by the testes.
Transgender men have functional ovaries after a year of testosterone injections. The ovaries of transgender men appear to remain functional even after a year of receiving hormonal treatment with testosterone, according to a small Israeli study presented Saturday in the United States.
What animals dont have genders? Worms. Some (not all) species of worms reproduce by an asexual process called fragmentation. They have no assigned gender, meaning they have both male and female reproductive parts and can reproduce sexually as either gender, or just break apart and each fragment can become a new worm.
Intersex conditions have been described in several domestic animal species. True hermaphrodites are rare and have both ovarian and testicular tissue and exhibit anomalies of the external genitalia. The karyotype is variable and may be a chimera, mosaic, or unknown.
Many taxonomic groups of animals (mostly invertebrates) do not have separate sexes. In these groups, hermaphroditism is a normal condition, enabling a form of sexual reproduction in which either partner can act as the female or male.