The Kawekaweau was the largest gecko ever noted. This lizard grew to be almost two feet long. On the reverse side of the spectrum is the dwarf gecko, which will not even achieve an inch in length. It is the world's tiniest reptile.
One thing about these lizards is that they have no eyelids. They have a kind of protective coating, however. They must clean their eyes using their tongues because of having no covers. One species, the crested gecko, looks like it has eyebrows because of the crest above its eyes, which is made out of skin.
These splendid beings are quite vocal. They will bark, chirp, click and hiss, determined by what they are trying to express. A few of the sounds are for protection, and some are cultural actions. They let the others learn when they are happy.
Something they are able to do that other reptiles can't is climb walls. They've got very small hairs on the pads of their toes, and these grab the walls so they can scale straight up. It practically seems like they have some form of suction power when they accomplish that. The only one that doesn’t do this is the leopard gecko, as it has claws rather than pads.
That particular lizard has another distinct characteristic. You can pretty much forecast what the sex of its offspring will be by being aware of at what temperature it was incubated. The warmer the temperature, the more likely it is to be a male; the cooler the environment, the more it is likely to be a female.
Just like a lot of lizards, geckos can eliminate their tails as a defense mechanism. That is widely known, but what is much less recognized is that the crested gecko is not able to grow its tail again. For the others, the new tails they grow do not usually appear just like the one they dropped. It's going to have duller colors and marks, as well as be stubbier and plumper. It could even be deformed. One more fascinating bit here: They hold fat in their tails to get them through lean periods. It also retains nutrition, so it's not just a source of energy.
Another one of the fun facts about geckos is that whenever they want to communicate is bob their heads. Males will aggressively do this once they come across another male that they don't want near. He will also do it to draw a female.
