Why would the Reptilian species come to our planet? What is it about earth that would draw them here? Our climate or perhaps a plentiful source of food? What would cause them to make such a long intergalactic trip?
When I look at earth reptiles the first thing I notice are the scales which, the Reptilian race also is said to have according to those who have encountered them.
Scales are a form of protection on reptiles. The scales are made if hard keratin like our nails and protects the underlying soft skin which helps them retain water. So does the same hold true for the Reptilians?
Perhaps their world is a harsh dry world with a rough surface and/or inhabited with predators making them the prey? The environment could be just 2 seasons—hot or cold requiring hibernation in the cold season.
Earth could be a paradise for them. Temperate climate, plenty of water and food, shelter but most of all a total lack of predators. A rather appealing place to live.
If they are here among us they have done a great job of hiding, keeping their whereabouts unknown for survival. Is there enough room for us and them? Will they have to destroy us in order to live?