Geckos Have Sticky Feet
You’re used to seeing insects walk on the wall and ceiling or even the underside of a glass table, but among vertebrates, some geckos have the ability to cling by their toes to literally anything — with the single exception of Teflon. The reason for this has to do with the gecko’s special toe hairs.

Geckos Lick Their Own Eyeballs
Imagine if, instead of blinking, humans stuck out a long, pink, sticky tongue and cleared off our eyeballs, one at a time. That would be disgusting, and yet it’s kind of cute when geckos do it.

Geckos rely heavily on their eyesight — they have full-color vision and can see a large spectrum of color even in very dim light. But most geckos don’t have eyelids, so their precious eyeballs are covered with little protective scales that need to be wiped off occasionally. So, it’s really useful to have a long tongue in situations like these.

Geckos Are Chatty
Most lizards don’t vocalize, but geckos have sophisticated vocal communication systems, similar to those of mammals and birds. Where most other lizards are mute or can only make weak hissing sounds, geckos can bark and click, squeak and chirp in order to attract mates, defend territories or lure potential interlopers away when they get too close.

Geckos Help With Household Pest Control
Geckos mainly eat live insects, and because our houses have a lot of lights — which, in turn, attract a lot of bugs — geckos can often be found inside human habitations.

Houses have lots of narrow cracks and crevices, which provide shelter for geckos. One species of gecko, the invasive Asian house gecko in Australia, loves to hang out in homes, but there are hundreds of species and most don’t live in houses!

Gecko Have Antibacterial and Water Repellant Skin
Gecko skin is self-cleaning and antibacterial. Their ability to shed water helps keep them clean in the wild. The most fascinating thing about geckos is the way their skin repels water.  Water beads up and rolls off geckos, carrying dirt and bacteria away from their skin.