In the daytime, they hide in their burrows, in crevices or hang under rocks or branches. Scorpions that live on the dark rainforest floor may be active during the day. All scorpions are venomous. Scorpion venom is a cocktail of toxins, each scorpion species has a unique mixture designed for a particular prey or predator. Most venom is particularly toxic to insects, some to mammals probably because mammals are an important predator.
Scorpions can control how much venom is injected in a sting.
Scorpions with small, weak pincers tend to have more potent venom and sting repeatedly. Large scorpions may not sting small prey but just use their pincers to crush or rip up the prey alive. It is usually smaller scorpions which have more toxic venom. Many of these, however, can't even penetrate human skin with their sting. But even so, not all those stung eventually die, usually only children or the elderly succumb.