Ann & Steve Toon / Meerkat / Suricate (Suricata suricatta) pregnant female standing on hind legs, with swollen abdomen exposed, Kgalagadi Transfrontier Park, South Africa

Eric Baccega / Pregnant Himba woman pregnant with traditional jewellry and hair style, Kaokoland, Namibia October 2015

Jane Burton / Unspeyed bitch has taken over her daughter's 4-day pups. Dogs phantom pregnancy coincided with the birth of her daughters pups

Jane Burton / Sable Border Collie with phantom pregnancy, has stolen her daughter's four-day-old pups.

David Fleetham / Pregnant Atlantic bottlenose dolphin, centre (Tursiops truncatus), with two companions, Bahamas.

David Fleetham / Pregnant Atlantic bottlenose dolphin, centre (Tursiops truncatus), with companion, Bahamas.

David Fleetham / Atlantic bottlenose dolphin (Tursiops truncatus), pregnant, Bahamas.

Charlie Hamilton-James / Traditional Birth Assistant advising a mother breastfeeding her baby in village of Vinho. Her role is to help assistant women during and immediately after pregnancy, near Gorongosa National Park, Moza...

Charlie Hamilton-James / Traditional Birth Assistant advising a new mother about childcare in village of Vinho. Her role is to help assistant women during and immediately after pregnancy, near Gorongosa National Park, Mozambi...

Tony Wu / Male Crowned seahorse (Hippocampus coronatus) nestled amongst Holmes seaweed (Codium cylindrical), carrying a pouch full of developing juveniles that are almost ready to emerge, Japan, Pacific Ocean.

Yves Lanceau / Domestic donkey (Equus asinus) Donkey Grand Noir du Berry, pregnant ass standing in field, France.