A baby Woolly monkey clings onto its mother.

Gombe National Park,Tanzania: Baby Chimpanzee next to mother in forest yawns

An Eastern chimpanzee baby dangling from a tree by its arm as it chews a small branch.

Close-up shot of a robot baby.

A Woolly monkey hides behind a thick branch, looking around suspiciously. It then moves onto a nearby branch, with its baby hanging from its back.

Close-up shot of a family of Eastern chimpanzees relaxing in a forest clearing in the Gombe National Park, Tanzania. The baby chimpanzees are very restless and are pestering their parents. One of the baby chimpanzees is climbing all over its parents and ends up lying on the mother.

A Woolly monkey climbs onto a thick branch. Its baby is clinging onto it. The monkey moves along the branch.

A family of Eastern chimpanzees relaxing in a forest clearing in the Gombe National Park, Tanzania. When they wander off, the baby chimpanzee hangs onto its mother.

A Woolly monkey plays with the baby of another monkey. The baby is clinging onto its mother. The mother then wanders off with its baby.

Apeldoorn Netherlands: Endangered Crowned Sifaka Lemurs in a primate park in the Netherlands. A baby Lemur clings to its mother whilst she eats leaves, it then climbs onto a branch and also feeds.

Apeldoorn Netherlands: Endangered baby Crowned Sifaka Lemur in a primate park in the Netherlands.

Gombe National Park,Tanzania: Close up of face of baby chimpanzee grabbing thumb of it's mother and sucking it

A Woolly monkey scratches its leg. When it turns around, its baby is seen clinging onto its back. The monkey then crawls away with its baby attached to its back.

Close-up shot of a restless baby Eastern chimpanzee lying on the ground.

Close-up shot of a family of Eastern chimpanzees relaxing in a forest clearing in the Gombe National Park, Tanzania. The baby chimpanzees are very restless and are pestering their parents.

Close-up shot of a family of Eastern chimpanzees relaxing in a forest clearing in the Gombe National Park, Tanzania. The baby chimpanzees are very restless and are pestering their parents. One of the baby chimpanzees is climbing all over its parents and clinging onto them.

Close-up shot of the face of a baby Woolly monkey.

A baby mountain gorilla sucking a finger by its mother. It then wanders off, still sucking its finger. Lots of flies flying in the foreground.

A Woolly monkey crawls along a branch. Its baby is clinging onto its side. The monkey sits down on the branch for a moment, then gets up to continue moving along the branch.

Close-up shot of the face of a restless baby Eastern chimpanzee. The chimpanzee is lying on the ground.

Two adult Woolly monkeys sit on a thick branch. One of the Woolly monkeys plays with the baby of the other monkey. The baby is clinging onto its mother.

Raine Island, Australia: Various shots of baby green sea turtles hatching and climbing out from under the sand, wide view of tutles speedily scampering along the sand towards the sea.

Two baby Eastern chimpanzees playing in lianas over their mother.

A baby Woolly monkey clings onto the back of its mother.

Medium close up of a lion cub standing in grasslands and under dead tree branches, chewing a twig from tree. An adult lion is resting in the background.

West London, UK: Inquisitive black and white kitten in animal home tries to look into camera, image then dissolves to kitten peering at white rabbit with large ears in cage

Medium shot of a female lion walking across grasslands carrying a cub in her mouth.

A female lion leads two cubs across savannah grasslands in Etosha National Park, Namibia.

Medium close up of a mother kangaroo attending to its young. The joey pokes its head in and out of its mother's pouch.

Medium close up of a mother seal supervising a pup swimming under an ice sheet. Blue hue to shot. The seals' coats shine when the occasional ray of light penetrates the water.

Medium shot of a female impala licking her fawn in sandy terrain. Fawn tries to take its first steps but falls on its head.

West London,UK: Frightened black and white kitten in yard of animal home physically cowers away from camera but keeps staring at lens

A family of Eastern chimpanzees relaxing in a forest clearing in the Gombe National Park, Tanzania.

A white seal pup lays on snow and turns to face the camera, its black eyes and nose contrasting against the whiteness of its fur and surrounding snow.

Two newborn turtles struggle while walking across a sandy beach.

Medium shot of a female springbok supervising and encouraging a calf to start walking, calf takes its first steps and falls over.

Heligoland, Germany: A white seal pup peering into the camera with its large, dark eyes.

A newborn turtle struggles while walking across sand dunes on a beach.

Heligoland, Germany: A close up view of a seal pup resting its head on sand and looking around with its large, dark eyes.

Knut, the famous Polar bear cub, licking a man's hand and using its paws to cling to the hand.

Medium shot of a newborn springbok calf struggling to walk as it takes its first steps and stumbles across savannah grasslands.

An elephant calf plays near her mother.

Medium close up of a impala fawn suckling in long, green grass. Female impala cleaning and attending to her newborn fawn.

Medium shot of african elephants leading calves through green bushlands.

Close-up shot of a family of Eastern chimpanzees relaxing in a forest clearing in the Gombe National Park, Tanzania.

Medium shot of a female impala cleaning its fawn in long, green grass while the recently born fawn is trying to suckle.