Redback is a comb-footed spider species that is native to Australia. Female redbacks are venomous, which makes their bite dangerous. However, male redbacks are small and harmless.
Female redbacks can store sperms after mating and use them for up to two years to lay multiple egg batches. Also, they live longer, for about two to three years, compared to males, who have a short lifespan of six to seven months.