Suzi Eszterhas / Proboscis Monkey (Nasalis larvatus) mother grooming baby, Sabah, Borneo, Malaysia

Suzi Eszterhas / Proboscis Monkey (Nasalis larvatus) juvenile playing with baby, Sabah, Borneo, Malaysia

Donald M. Jones / Mule Deer (Odocoileus hemionus) doe and fawn in winter, Montana

Donald M. Jones / Burrowing Owl (Athene cunicularia) owlet greeting parent, Montana

Donald M. Jones / American Bison (Bison bison) calf nuzzling mother, western Montana

Stefan Christmann / Emperor Penguin (Aptenodytes forsteri) parent with chick, Queen Maud Land, Antarctica

Stefan Christmann / Emperor Penguin (Aptenodytes forsteri) parents with chick, Queen Maud Land, Antarctica

Stefan Christmann / Emperor Penguin (Aptenodytes forsteri) parent with chick, Queen Maud Land, Antarctica

Stefan Christmann / Emperor Penguin (Aptenodytes forsteri) parent feeding chick, Queen Maud Land, Antarctica

Stefan Christmann / Emperor Penguin (Aptenodytes forsteri) parent grooming chick, Queen Maud Land, Antarctica

Stefan Christmann / Emperor Penguin (Aptenodytes forsteri) parent tending to chick, Queen Maud Land, Antarctica

Stefan Christmann / Emperor Penguin (Aptenodytes forsteri) molting chick begging for food, Queen Maud Land, Antarctica

Jeff Rotman / Pectoral fin of a Steepheaded parrotfish (Chlororus gibbus) in the Red Sea, Egypt.

Linda Pitkin / Red Sea steephead parrotfish (Heavybeak parrotfish) Chlorurus gibbus, on coral reef Shark Reef to Jolande, Ras Mohammed National Park, Egypt, Red Sea.

Georgette Douwma / Steepheaded parrotfish (Scarus gibbus). Egypt, Red Sea.

Georgette Douwma / Indian-ocean steephead parrotfish (Chlorurus strongycephalus) female. Andaman Sea, Thailand.

Alex Mustard / Red Sea steephead parrotfish (Chlorurus gibbus) male, portrait, Ras Mohammed National Park, Sinai, Egypt, Red Sea.

Alex Mustard / Two Bluestreak cleaner wrasse (Labroides dimidiatus) attending to a large male Steephead parrotfish (Chlorurus strongylocephalus), Laamu Atoll, Maldives, Indian Ocean.