not all bites warrant a trip to the hospital. But some might. In this ranking, we'll explore 15 species of spiders, each with ...

What looks like a spider but isn’t one, lives underwater and breathes through its legs? That would be the mysterious sea ...

It is both strong and stretchy but not all spider silk is the same, there are several different types. Spiders produce silk using special organs called spinnerets, located typically on the ...

Spiders are some of the most diverse creatures on Earth. While they can be frightening, most of them are harmless and ...

There are several species of widow spiders in the United ... Immature and male brown widow spiders don't bite at all. Brown widows are much less aggressive than black widows — they prefer ...

Almost all of us will have seen spiders in our homes - perhaps walking across the lounge floor, stuck in the bath, or quietly sitting in a ceiling corner. Several species share our living spaces, some ...

Spiders come in all shapes and sizes ... videoCharacteristics of fish Adaptations like fins and tails help all kinds of fish, even giant sharks, to live underwater in this video slideshow.

Each type of silk gland is associated with a particular spinneret. No species has all seven, but orb-web weavers have five. Spiders have structures called spinnerets on their abdomen, usually on the ...