The male Panamanian Golden Frog (Atelopus zeteki) has a subtle way of attracting females… it waves. This friendly gesture can arouse the attention of a rival male, which often ends in a wrestling match.
* Since this footage was filmed, this species has gone extinct in the wild due to the deadly chytrid fungus. Conservationists now care for the last of this frog in various zoos and other institutions.
with David Attenborrough
(via: Nature - PBS)