Greetings my friend, the lizards lose their tails in a defence action and thankfully their tail grows back very quickly. They hope that the predator will go for the tail, and that they can make a quick getaway.
We have many of these little dwarf geckos running around in our garden and on our walls. They are good to keep the pests away, and I think they work in a partnership with the rain spiders, hoping that the rain spiders won't eat them.
Hope you will have a good new week, and have a !BEER