toadschooled:

Harlequin toads are interesting in that, aside from being beautiful, they often display a variety of behaviors not seen in other species of true toad. For example, males of the species Atelopus spumarius [Pebas stubfoot toad] are quite territorial and will undergo elaborate rituals in order to dispel intruders. As the uploader Daniela Rößler

writes:

Two males of neighboring territories in a Atelopus spumarius sensu lato population (without red feet) in the state of Amapá, Brazil, filmed fighting. In the beginning the yellow individual vocalizes a typical distress call, whereas the whitish-blue individual vocalizes a territoriality call. This was an intruder experiment, the white male was put in the territory of the yellow male. The video shows fighting behavior, vocalizations and underlines the strong territoriality of these toads.