not at all. They are however, difficult to see in their natural environment. in western PA. they are everywhere. The best place to find them, if you are patient is on plants with long slender leaves like Japanese iris's. They blend in so well that to see them look down the leaf shoots and you will see their legs. Where there is one there are usually several as they follow the pheromones of other mantis's and stay fairly close to the egg box.
noone. its not on any endangered species list
They are not native to North America, but there is abundant habitat for them here, and the ones that found their ways to the U.S. on ships during colonization became established and started breeding here.
Most species of mantis can fly, including the praying mantis.
never no species of mantid are endangered except one.
No, they reproduce sexually. Some of the species praying mantis can be reproduce asexually. But not all the species of praying mantis asexual.
I'm unaware of even an unofficial estimate. They are widespread and certainly not an endangered species.
The praying mantis (Mantis religiosa) is not endangered anywhere. There are many other types of mantises, sometimes called "praying mantises" colloquially, around the world though, and some of them are endangered.
African giant praying mantis
Mantis religiosa
no no species of mantis are poisonous.
They need to breathe as their bodies are slanted. There are 2,000 species of praying mantis, and some are born with bent tails, as this is their species. So, your praying mantis is fine.
an insect