After mating, the male builds a nest, in which each female lays her eggs in turn. The male incubates from ten to sixty eggs. The male will utilize a decoy system and place some eggs outside the nest and sacrifice these to predators, so that they won't attempt to get inside the nest. The male may utilize another subordinate male to incubate his eggs, while he finds another harem to start a second nest. While caring for the young, the males will charge at any perceived threat that approach the chicks including female rheas and humans. (source: wikipedia / image credit: MIGUEL ROJO/AFP/Getty Images)
Seahorse
The male seahorse is equipped with a brood pouch on the ventral, or front-facing, side. When mating, the female seahorse deposits up to 1,500 eggs in the male's pouch. The male carries the eggs for anywhere from 9 to 45 days until they emerge, expelling fully developed, miniature seahorses in the water. Once the seahorse babies are released into the water, the male's role is done and he offers no further care. (source: wikipedia / image credit: SAM YEH/AFP/Getty Images)
Lion and cubs
A lions' status as a good dad is debatable. Most of the time they just sleep and dominate the food, but they do defend the pride from rival males. Sometimes, a male will patiently let the cubs play with his tail or his mane, whereas another may snarl and bat the cubs away. (source wikipedia / image credit: JIM WATSON/AFP/Getty Images)
Eurasian Dotterel
The male dotterel generally is responsible for incubation and looks after the chicks. In most cases the cock dotterel successfully prevents other males from getting his mate and fertilizing her eggs. He usually rears chicks that he has fathered. (source: wikipedia / image credit: wikimedia commons Dr. Helwig Brunner, Freigegeben von Dr. Peter Sackl, Joanneum Graz)
Emperor Penguin
The male spends the winter incubating the egg in his brood pouch, balancing it on the tops of his feet, for 64 consecutive days until hatching. In the four months of travel, courtship, and incubation, the male may lose as much as 44 lbs. (source: wikipedia / image credit: wikimedia commons)
Three-spined Stickleback
Only the males care for the eggs once they are fertilised. Parental care is intense, involving nest maintenance and fanning of the eggs to ensure a fresh water supply, even at night. Males build the nests from vegetation, sand, pebbles and other debris, adhering the material together with spiggin, a proteinaceous glue-like substance secreted from the kidneys. (source: wikipedia / image credit: wikimedia commons)
Golden Jackals
Golden Jackal pairs are monogamous, and will remain together until one of them dies. Males take part in the raising of their young, and will dig burrows for them. (source: wikipedia / image credit: istock.com)
Darwin Frog
The female lays about 30 eggs and then the male guards them for about two weeks, until they hatch. Then the male takes all the survivors and carries around the developing young in his vocal pouch. The tadpoles develop in their baggy chin skin, feeding off their egg yolk. When the tiny tadpoles have developed (about half an inch) they hop out and swim away. (source: wikipedia / image credit: Mono Andes wikimedia commons)
Human
C'mon! Humans are animals too! A really good human father splits rearing the child with its mother. He participates in the child's life for at least 18 years ... probably more like 30 years in reality. Some would say that you never stop teaching your children. (credit: Jennifer Fox)