Eric Baccega / Polar bear (Ursus maritimus) female coming out the den with one three month cub. Wapusk National Park, Churchill, Manitoba, Canada, March.

Anup Shah / Lioness (Panthera leo) with cub aged 2-3 months portrait. Masai Mara National Reserve, Kenya, August

Anup Shah / Spotted hyena (Crocuta crocuta) preparing to carry a pup aged 2-3 months. Masai Mara National Reserve, Kenya, July

Denis-Huot,Denis-Huot / White rhino (Ceratotherium simum) mother and baby grazing, Nakuru National Park, Kenya

Fiona Rogers / Bornean Orangutan (Pongo pygmaeus wurmbii)female 'Unyuk' and her daughter 'Ursula' aged 4 years. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010. Rehabilita...

Fiona Rogers / Bornean Orangutan (Pongo pygmaeus wurmbii) female 'Unyuk' holding her daughter 'Ursula' age 4. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010. Rehabilitate...

Roy Mangersnes / Wild Bolivian / Peruvian Squirrel Monkey (Saimiri boliviensis) female carrying young on her back. Madidi National Park, Bolivia.

Sergey Gorshkov / Giraffe (Giraffa camelopardalis) female bending down to calf, Okavango Delta, Botswana

Diane McAllister / Female Rocky Mountain bighorn sheep ewe (Ovis canadensis canadensis) warning her newborn lamb that a rocky ledge is too close and dangerous. She places her front hoof on the baby's back, stopping it f...

Diane McAllister / A wild newborn colt (Equus caballus) standing up being nuzzled by its mother. Foothills of Reno, Nevada, USA, May.

Jane Burton / Border Collie with one of her puppies, 5 weeks, yawning.

Jane Burton / Smooth coated Jack Russell Terrier, black, tan and white, female with two 8 week puppies