The job of African lion fathers, like this one in Kenya's Masai Mara National Reserve, is mostly to protect their cubs—but they also find chances to play.
Photograph by Suzi Eszterhas, Minden Pictures
A male jawfish keeps his mate’s eggs warm by holding them in his mouth. When he needs to eat, the fish spits out the eggs for a few seconds, then sucks them back in.
Photograph by Fred Bavendam, Minden Pictures
Marmosets—monkeys in Central and South American rain forests—usually have twins. Dads groom, feed, and give piggyback rides to the youngsters soon after they're born.
Photograph by Nick Gordon, NPL, Minden Pictures
A male Oreophryne frog, like this one from Papua New Guinea (a country north of Australia) will stand guard over his eggs until they grow into tiny froglets.
Photograph by George Grall, National Geographic Creative
As wolf pups grow older and more independent, dads teach the little ones how to hunt for their own food.
Photograph by Danita Delimont, Ardea.com
The male African jacana does most of the parenting for its offspring. He sits on the eggs until they hatch and carries the chicks under his wings. The dad shown here even plucked his chick from the water after it fell in!
Photograph by Lou Coetzer, NPL, Minden Pictures
Both emperor penguin parents look after their chick, but it's Dad that carries the egg on his feet for nine weeks to shield it from the Antarctic cold.
Photograph by Robert Schoen, Biosphoto, Minden Pictures
If you're a seahorse, your dad gave birth to you! A pouch on a male seahorse's stomach can fertilize a female's eggs, then later pop out as many as 2,000 babies.
Photograph by Norbert Wu, Minden Pictures
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