Five Films / Female Grey seal (Halichoerus grypus) defending pup on beach, chasing male away, Horsey, Norfolk, November.

Andy Rouse / Bengal Tiger (Panthera tigris tigris) female 'Noor T39' carrying wet cub. Ranthambore National Park, India.

Andy Rouse / Bengal Tiger (Panthera tigris tigris) female 'Noor T39' carrying wet cub. Ranthambore National Park, India.

Andy Rouse / Bengal Tiger (Panthera tigris tigris) female 'Noor T39' carrying cub. Ranthambore National Park, India.

Andy Rouse / Bengal Tiger (Panthera tigris tigris) female 'Noor T39' carrying cub. Ranthambore National Park, India.

Anup Shah / Western lowland gorilla (Gorilla gorilla gorilla) female 'Malui' carrying her stillborn infant on her back, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. December 20...

Anup Shah / Western lowland gorilla (Gorilla gorilla gorilla) female 'Malui' tending to her stillborn infant, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic. December 2011.

Steven Kazlowski / Moose (Alces alces) cow suckling her newborn calves. Tony Knowles Coastal Trail, Anchorage, south-central Alaska, May.

Steven Kazlowski / Moose (Alces alces) cow with a newborn calves grazing on spring grass. Tony Knowles Coastal Trail, Anchorage, south-central Alaska, May.

Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) female 'Unyuk' cuddling her daughter 'Ursula', age 4 years. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. June 2010. Reha...

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...