Arachnids
Arachnids (spiders), have 8 legs.

Think of a group of kids wearing anoraks (anorak kids – arachnids) climbing a gate (eight).
Examples of arachnid
Tarantula (arachnid)

Although tarantulas give most people the creeps, they are harmless to humans (apart from a painful bite!). Their mild venom is weaker than a bee’s.