The present work analyses the more notorious behavioral displays that Dendrobates truncatus (Cope, 1861) exhibits in captivity. As conspicuous behaviors for the frequency and duration of the same ones were: refuge (39.9%), sunbathe (22.8%) and quiet (20.9%), all of them displays characterized by immobility. Our results show the existence of a marked “site fidelity”, not related with sexual behavior neither with territorial defense as it is described in natural environments. Such results seem to be associated with the habitat conditions in captivity. They show that ethological aspects like refuge and stillness, which are not frequently observed under natural conditions, seem to be an important part of the behavioral displays of this species in captivity.