While most frogs lays their fertilized eggs and never return to them again, there is a certain type of frog that caries its eggs in its stomach. The mother eats the eggs, they hatch, and after they mature enough she regurgitates them to finish growing – as if pregnancy didn’t involve enough vomiting already.
Like lots of different warm blooded creatures, male seals impregnate various female amid a mating season. Fur seals are known not mate with up to 50 females or more – now that is the thing that you call a baby daddy or aristo.