Paul Bertner / Giant Crab Spider (Sparassidae) mother with spiderlings, Udzungwa Mountains National Park, Tanzania

Steve Downer / Garden cross spider (Aranea diadematus) juvenile spiderling making web, UK.

Ann & Steve Toon / Guide lifting trap door of spider burrow to show baby spiderlings inside, iMfolozi game reserve, KwaZulu-Natal, South Africa.

Duncan Murrell / Lichen huntsman spider (Pandercetes gracilis) female with a silk sac of spiderlings attached to a tree trunk in the Danum Valley Conservation Area lowland dipterocarp rainforest, Sabah, Malaysian Born...

Emanuele Biggi / Fen raft spider (Dolomedes plantarius) female protecting her spiderlings in her nursery web, Italy.

Emanuele Biggi / Great Fen / Raft spider (Dolomedes plantarius), spiderlings on their nursery web, Alessandria, Italy, August.

Emanuele Biggi / Dandy jumping spider (Portia schultzi) eating a spider (Stegodyphus dumicola) with spiderling (Archaeodictyna ulova) scavenging Kwazulu-Natal, South Africa

Emanuele Biggi / Dandy jumping spider (Portia schultzi) eating a spider (Stegodyphus dumicola) with spiderling (Archaeodictyna ulova) scavenging Kwazulu-Natal, South Africa

Philippe Clement / Longbodied cellar spider / skull spider (Pholcus phalangioides) female with spiderlings crawling on white wall, Belgium, August

James Dunbar / Invertebrate keeper with tubes containing Deserta Grande Wolf Spider (Hogna ingens) spiderlings, in captive breeding program at Bristol Zoo Gardens, Captive. Critically endangered species, native to M...

James Dunbar / Deserta Grande Wolf Spider (Hogna ingens) spiderlings on back of mother, in captive breeding program at Bristol Zoo Gardens, Captive. Critically endangered species, native to Madeira.

James Dunbar / Deserta Grande Wolf Spider (Hogna ingens) spiderlings on back of mother, in captive breeding program at Bristol Zoo Gardens, Captive. Critically endangered species, native to Madeira.