Sure. Some beardies don't like the texture though. The only way to find out about your individual beardie is to try.
No it is not good for them
They behave good but it depends
No, cats do not typically eat bearded dragons. Bearded dragons are not a natural prey for cats.
If they are tame
Yes they do
no bearded dragons cannot have wood chip
Yes they are - since Bearded dragons lay eggs.
Onions are not a good food choice for bearded dragons. They can cause hemolytic anemia in dogs and cats. It's not worth the risk.
its not possible for bearded dragons to mimic crickets
go on youtube and search up bearded dragons
No, bearded dragons are not the same as frilled necked. Bearded dragons have a more wider beard as frilled neck dragons have a smaller frill around their neck.
Repti Bark is not recommended as a substrate for bearded dragons. It can cause impaction if ingested and does not hold humidity well. Sand or tile are better options for bearded dragon substrates.