Short answers, pulled from the story.
Paternal rights differ widely from country to country, reflecting the level of involvement and roles expected by each society. In some jurisdictions, such as Quebec civil law, a mother's husband is legally defined as the father regardless of biological relationship. Roman law defined fatherhood through the principle that the father is whom the marriage vows indicate.
Paid paternity leave first began in Sweden in 1976. It is now paid in more than half of European Union countries. In the case of male same-sex couples, the law often makes no provision for either one or both fathers to take paternity leave.
Increased father-child involvement is linked to greater social stability, higher educational achievement, and stronger prospects for healthy adult relationships. Children raised with fathers perceive themselves to be more cognitively and physically competent than peers without a father, and active father figures may reduce behavioral and psychological problems in young adults.
Legal and social categories include biological father, adoptive father, stepfather, putative father, foster father, and social father. Additional terms cover contact level and circumstance, such as absent father, stay-at-home dad, and posthumous father. A putative father is a man whose biological relationship to a child is alleged but has not been established.
Male emperor penguins alone incubate eggs, balancing them on their feet in a brood pouch. Male seahorses carry fertilized eggs in an abdominal pouch until the embryos are born. Titi and owl monkey fathers carry their infants ninety percent of the time, and titi monkey infants develop a preference for their fathers over their mothers.
Tukulti-Ninurta I, the Assyrian king who reigned from 1243 to 1207 B.C.E., was killed by his own son after sacking Babylon. In 1599, Beatrice Cenci was condemned and beheaded for allegedly killing her father after he imprisoned and raped her. Chiyo Aizawa murdered her father in Japan on the 5th of October 1968 after fifteen years of rape, and the case changed Japan's Criminal Code regarding patricide.