Tokays are predominantly nocturnal (active at night) geckos that live in pairs or together with their offspring in families. They usually spend the day in their shelters. Males are notable for their unmistakable, loud calls. These sound like "tok-kay" or "gek-ko" and are repeated several times in a row. A call sequence is often preceded and followed by a “croaking” or “creaking” sound. Females can only emit “squeaking” defensive sounds.
Females produce clutches of two eggs each several times per year. The eggs are glued to suitable substrates and then guarded by the female until they hatch. After the babies have emerged from their eggs, the female will eat the remains of the eggshells to replenish her calcium reserves. Both parental specimens will now care for their young until these reach sexual maturity and are driven off by the male.