Without further adieu:
January 20 – Penguin Awareness Day
January 21 – Squirrel Appreciation Day
January 25 – National Moose Day
January 31 – International Zebra Day
February 2 – Groundhog Day
February 2 – Hedgehog Day
February 12 – Darwin Day
February 14 – World Bonobo Day
February 15 – Hippo Day
February 16 – World Whale Day
Third Saturday in February – World Pangolin Day
February 22 – World Crocodile Day
February 27 – International Polar Bear Day
March 3 – World Wildlife Day
March 20 – World Frog Day
March 20 – World Sparrow Day
March 22 – International Day of the Seal
March 23 – World Bear Day
Last Wednesday in March – Manatee Appreciation Day
April 4 – World Rat Day
April 7 – International Beaver Day
April 14 – National Dolphin Day
April 17 – Bat Appreciation Day
April 25 – World Penguin Day
April 27 – World Tapir Day
April 27 – Save the Frogs Day
April 27 – International Hyena Day
May 3 – International Leopard Day
May 8 – World Donkey Day
May 15 – International Kangaroo Care Awareness Day
March 16 – National Panda Day
May 17 – Endangered Species Day
May 20 – World Bee Day
May 23 – World Turtle Day
March 26 – World Eagle Day
May 28 – Whooping Crane Day
May 30 – World Otter Day
June 8 – World Oceans Day
June 8 – Dragonfly Day
June 11 – World Jaguar Day
June 16 – World Sea Turtle Day
June 17 – World Croc Day
June 20 – American Eagle Day
June 21 – World Giraffe Day
Last week of June — National Insect Week (UK)
July 14 – World Chimpanzee Day
July 16 – World Snake Day
July 29 – International Tiger Day
August 4 – International Owl Awareness Day
August 5 – World Ant Day
August 8 – International Cat Day
August 10 – World Lion Day
August 12 – World Elephant Day
August 13 – International Wolf Day
August 14 – World Lizard Day
August 19 – International Orangutan Day
August 20 – World Mosquito Day
August 30 – International Whale Shark Day
First Saturday in September – International Vulture Awareness Day
September 1 - International Primate Day
September 8 – National Iguana Day
September 22 – World Rhino Day
September 24 – World Gorilla Day
September 26 – Black Footed Ferret Day
Last Friday in September – Save the Koala Day
Last week of September – Sea Otter Awareness Week
October 1 – International Raccoon Appreciation Day
October 4 – World Animal Day
October 20 – International Sloth Day
October 21 – Reptile Awareness Day
October 18 – World Okapi Day
October 23 – International Snow Leopard Day
October 27 – World Lemur Day
Last week of October – Bat Week
November 3 – World Jellyfish Day
First Saturday in November – National Bison Day
December 4 – International Cheetah Day
December 14 – World Monkey Day