Heidi & Hans-Juergen Koch / Wandering Spider (Phoneutria fera) hatchlings, native to South America

Konrad Wothe / Wandering Spider (Phoneutria fera) in defensive posture, Panguana Nature Reserve, Peru

Konrad Wothe / Wandering Spider (Phoneutria fera) in defensive posture, Panguana Nature Reserve, Peru

Konrad Wothe / Wandering Spider (Phoneutria fera) in defensive posture, Panguana Nature Reserve, Peru

Konrad Wothe / Wandering Spider (Phoneutria fera), Panguana Nature Reserve, Peru

Premaphotos / Brazilian wandering spider (Phoneutria fera) female guarding her egg-sac, which she has camouflaged with bits of dead leaf. A very poisonous genus of spider, in rainforest, Brazil

Joel Sartore / Photo Ark / Brazilian wandering spider (Phoneutria fera) portrait, Urku Center, Tarapoto, Peru. Captive.

Gil Wizen / Female Wandering spider (Phoneutria fera) guarding her swarm of offspring under a bed in a research station, Jatun Sacha Biological Station, Napo province, Amazon basin, Ecuador. Winner of Urban Wildl...