The Brazilian wandering spiders can grow to have a leg span of up to 13-15 cm (4-5 in). Their body length ranges from 17 to 48 mm (0.7-1.9 in). Its venom contains a potent neurotoxin, known as PhTx3. At deadly concentrations, this neurotoxin causes loss of muscle control and breathing problems, resulting in paralysis and eventual asphyxiation."
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