. . . "Is a mexican red knee tarantula poisonous"@en . "Of course it is. All spiders are venomous. However, except in cases of severe allergic reactions, only a few species can kill an adult human (the ones I know of are the black widow, funnelweb, and brown recluse). Movies notwithstanding."@en . . "Of course it is. All spiders are venomous. However, except in cases of severe allergic reactions, only a few species can kill an adult human (the ones I know of are the black widow, funnelweb, and brown recluse). Movies notwithstanding."@en .