Unbirthing (also known by the Furspeech term, Re-Whelped) is used to describe the paraphilia involving the desire to be "swallowed alive" by female genitalia, or when a female fur takes another into her womb and "gestates" that fur for a time as her own unborn child. A less-common but still significant minority also practice UB-Vore, wherein the female unbirther's body ultimately consumes the unbirthed. Another variant on this is males absorbing others (generally other males) as a form of male pregnancy. This is known as cock vore and often involves Hypertrophilia and/or Macrophilia.
 Views regarding unbirthing
There are several different, slightly overlapping camps of thought regarding this philia:
- For many, unbirthing is attractive in its symbolic meaning. The opportunity to trust someone quite literally with one's entire life, to be nurtured and protected, is what attracts the unbirthed. On the other side, the unbirther can demonstrate her care for another in a deep, trusting way, and enjoy something living inside her, a sensation often attractive in and of itself.
- For others, unbirthing is a form of dominance (hence the vore aspect). The attraction of unbirthing centers upon the control gained over another creature: the unbirthed's freedom or movement is restricted, and their senses are (at best) muffled. The unbirthed is totally dependent upon the unbirther, relying on them for sustenance and oxygen.
- Another aspect of unbirth attractive to some is the age-regression scenario which may take place inside an unbirther's womb. Returned to the womb, an unbirthed creature grows younger; the unbirther may choose to rebirth their guest at any point or simply regress the unbirthed past the point of conception, effectively erasing their existence. There are many variations on this theme, some overlapping with the oviposition philia.
- A fourth group comprised of the overlap between fans of unbirth and those of vore lies in the endosomatophilia paraphilia, or attraction to fantasies involving complete encapsulation of a living thing within the body of another living thing. A second overlap between the two lies in absorbing or digesting an unbirthed creature: a form of genital vore.
 Unbirthing media
Even though unbirthing art is not uncommon and may be found in the work of Mamabliss, Duo Radon, MrPerson and others, no single graphic artist stands out in this particular field. Within the furry writer community, some noted authors of such stories are Dream Weevil, Animakitty, Grolbek, JessKATT, Smokescale and Rochndil.