Male fiddler crabs (Uca species) have one enlarged claw that is used for a waving courtship display. Females prefer males with large claws and fast
Misdirected courtship can lead to more serious consequences than the decreased biological success of a few individuals, as seen in the explosive breeding and “functional
Although rare, there are three identified (so far) amphibian species where females can engage in either egg-laying (oviparity) or give birth to live young (viviparity).
From birds to lizards and mammals, parents put effort into showing their offspring how to forage effectively. That is, how to obtain nutrition while maintaining
