Any spider of the family Ctenidae, some of which are extremely aggressive.

Any spider from the family Scytodidae. These spiders catch their prey by spitting an immobilizing fluid at them.

Any spider of the world-spanning family Theridiidae, that build tangle space webs and have a comb of serrated bristles (setae) on the tarsus of the fourth leg.

Any species of the family Thomisidae, spiders that hunt in flowers.

Any of the family Oxyopidae of spiders, which hunt their prey rather than spinning webs to ensnare them.

Any of several species of wandering spiders (family Lycosidae) that catch their prey on the ground by stalking it and not building webs.

Any of a number of poisonous funnel web spiders, especially Tegenaria agrestis, indigenous to Europe.

any of many small venomous spiders of the genera Loxosceles and Sicarius.

Eresus sandaliatus, a species of spider found primarily in northern and central Europe, males generally being 6-9mm long and characterized by a bright orange back featuring four large and two small ebony spots, females being 10-16mm long and jet-black.

a European spider, Dysdera crocata, that has been introduced to the United States; it has a painful, but not normally dangerous, bite