Donald M. Jones / Mountain Goat (Oreamnos americanus) kids nuzzling, western Montana

Anup Shah / African Lion (Panthera leo) female with cubs, Masai Mara, Kenya

Suzi Eszterhas / Harbor Seal (Phoca vitulina) mother and pup nuzzling, Monterey Bay, California

Danny Green / Coastal brown bear (Ursus arctos) and cub, Lake Clarke National Park, Alaska, September.

Ashish & Shanthi Chandola / Plains zebra (Equus quagga) grooming foal, Kruger National Park, South Africa, July.

Cyril Ruoso / Icelandic horses, group of three interacting, Iceland, August. Non-ex

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) mother and pup, Rabida Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) mother nuzzling pup, Rabida Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) mother nuzzling pup, Rabida Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) mother nuzzling pup, Rabida Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) mother nuzzling pup, Rabida Island, Galapagos Islands, Ecuador

Ingo Arndt / European Beaver (Castor fiber) grooming newborn baby inside lodge, Germany