Why are tarantula considered poisonous?

In reality, the venom of these largest-of-all-spiders generally has very low toxicity to humans. I myself was once bitten by a Texan species and hardly even felt it. None of the North American species or those commonly kept as pets are considered to pose even a mild bite hazard. read more

While ALL tarantulas are venomous, there do not appear to be any known poisonous tarantulas*. Both could be considered toxins, but the difference is the delivery method. Venom is almost always employed “aggressively”. read more

Unlike most spider species in the suborder Araneomorphae, which includes the majority of extant spider species, and most of which have six, tarantula species have two or four spinnerets. Spinnerets are flexible, tube-like structures from which the spider exudes its silk. read more