Hairs are mostly fibrous proteins and are composed of keratin, and also the main constituent of skin, nails, wool, woof, feathers etc.
Keratin is the essential fibrous protein which has a structural and protective functions in the epithelium.
They need water so they can survive and so they don't die of thirst
The scarlet ibis (Eudocimus ruber) is a species of ibis in the bird family Threskiornithidae. ... Traditional Linnaean taxonomy classifies it as a unique species, but some scientists have moved to reclassify it as a ... More recent observation, however, has documented significant crossbreeding and hybridization in the wild.
The Gecko. While human-made devices inspired by gecko feet have emerged in recent years, enabling their wearers to slowly scale a glass wall, the possible applications of gecko-adhesion technology go far beyond Spiderman-esque antics. A researcher is looking into how the technology could be applied in a high-precision industrial setting, such as in robot arms used in manufacturing computer chips.