Shattil & Rozinski / Sea otter (Enhydra lutris) mother and pup off the coast, British Columbia, Canada, Pacific Ocean, September

John Cancalosi / Great egret (Ardea alba) adult with chicks begging for food on nest, Louisiana, USA

Tom Vezo / Two Lynx kittens {Lynx lynx} USA. Captive

Tom Vezo / Lynx kitten {Lynx lynx} on a rotten log. USA. Captive

Tom Vezo / Three Common / Mew gull {Larus canus} chicks standing in water, USA.

John Cancalosi / Rubber Boa (Charina bottae) adult with newborn young, Oregon, USA, captive

John Cancalosi / Curve-billed Thrasher chicks (Toxostoma curvirostre) with adult attending young on nest, Arizona, USA

Tom Vezo / Burrowing owl {Athena cunicularia} four chicks at entrance to nest burrow, Tucson, Arizona, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with eggs, NY, USA

John Cancalosi / Great Egret (Ardea alba) with young on nest, Louisiana, USA

John Cancalosi / Great Egret (Ardea alba) on nest with young, Louisiana, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with eggs, NY, USA

John Cancalosi / Great Egret (Ardea alba) with young on nest, Louisiana, USA

John Cancalosi / Great Egret (Ardea alba) with young on nest, Louisiana, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with newly hatched young and eggs, NY, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with eggs, NY, USA

John Cancalosi / Great Egret (Ardea alba) with young on nest, Louisiana, USA

John Cancalosi / Great Egret (Ardea alba) with young on nest, Louisiana, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with newly hatched young and egg, NY, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with newly hatched young, New York, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with newly hatched young, NY, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with newly hatched young, NY, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with newly hatched young, NY, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with newly hatched young, NY, USA

John Cancalosi / Canada Goose (Branta canadensis) Adult on nest with newly hatched young, New York, USA

Shattil & Rozinski / Two fledgling Black billed magpies {Pica hudsonia} Colorado, USA,

John Cancalosi / Great egret (Ardea alba) adult with three chicks on nest, Louisiana, USA

John Cancalosi / Great egret (Ardea alba) adult with chicks on nest, Louisiana, USA

John Cancalosi / Great Egret (Ardea alba) adult feeding chick on nest, Louisiana, USA

Shattil & Rozinski / American coot {Fulica americana} chick and adult, Colorado, USA

Shattil & Rozinski / American coot {Fulica americana} and chick feeding on water weed, Colorado, USA

Shattil & Rozinski / American coot {Fulica americana} with chicks, Colorado, USA

Steven Kazlowski / Spirit / Kermode bear {Ursus americanus kermodei} white sow with black cub walking on log at high tide, along the coast of temperate rainforest, Central British Columbia, Canada.

Steven Kazlowski / Spirit / Kermode bear {Ursus americanus kermodei} white sow with black cubs, walking along rocky riverbed in temperate rainforest, Central British Columbia, Canada.

Steven Kazlowski / Spirit / Kermode bear {Ursus americanus kermodei} white sow with black cub walking along log at high tide, Central British Columbia, Canada.

Steven Kazlowski / Spirit / Kermode bear {Ursus americanus kermodei} white sow with black cubs walking in grass, temperate rainforest, Central British Columbia, Canada.

Tom Vezo / Western sandpiper {Calidris mauri} chick camouflaged in low shrubs, Nome, Alaska, USA

Tom Vezo / Lowland gorilla mother and baby (Gorilla gorilla gorilla), Captive

Tom Vezo / Grizzly bear female with cubs {Ursus arctos horribilis} resting by shoreline, Alaska, USA

TJ Rich / Polar Bear {Ursus maritimus} mother suckling year-old cubs, Cape Churchill, Canada

Tom Vezo / Common caracara chicks in nest in yucca plant {Caracara plancus} Texas, USA

Tom Vezo / Common caracara with chicks at nest in yucca plant {Caracara plancus} Texas, USA

John Cancalosi / Gambel's quail on nest with chick {Callipepla gambelii} Arizona, USA.

John Cancalosi / Great egret at nest with chicks {Ardea alba} Louisiana, USA

John Cancalosi / Great egret at nest with chicks {Ardea alba} Louisiana, USA

John Cancalosi / Great egret at nest with chicks {Ardea alba} Louisiana, USA

John Cancalosi / Gambel's quail (Callipepla gambelii) female & chicks Arizona USA Sonoran Desert

John Cancalosi / Gambel's quail (Callipepla gambelii) female & chicks, Arizona USA Sonoran Desert

Tom Vezo / Burrowing owl {Athene cunicularia} parent feeding chicks at entrance to nest burrow, Tucson, Arizona, USA

Tom Vezo / Oystercatcher with chicks. {Haematopus palliatus} Long Island, NY, USA

Tom Vezo / Least tern defends chick. {Sternula antillarum} Long Island, NY, USA.

Tom Vezo / Least tern {Sternula antillarum} bringing food for recently hatched chicks, Long Is, NY

John Cancalosi / Great egret at nest with chicks {Ardea alba} in cypress swamp, Louisiana, USA

John Cancalosi / Great egret at nest with chicks {Ardea alba} Louisiana, USA

John Cancalosi / Great egret pair at nest with chicks {Ardea alba}, Cypress swamp, Louisiana, USA

Juergen Freund / Scientist checking teeth of a baby Harp Seal {Phoca groenlandicus} Magdalen Islands, Canada