They are creatures we cannot see because they created from fire. They are many kinds Dog like and some can fly and others do travel like us from place to place and some are like snakes or snake like they are tribes and groups and religions. It been said in Islamic literature that demons been created from camels so they almost look like either camels or even goats . or as our prophet described like pieces of night are as called as dark entities. They can move in our blood the same way water can move in tree roots. They are impressed by man kind body! we are too beautiful for them! We are indeed master piece in god creation that's why they are jealous. they can have Sex and babies! and they can have sexual relation with man kind. they used to marry from us. One kind of those in Islamic literature were one eyed woman and her mom used to be the same they came to a man and she married him! he was scared to hell they even brought a judge and witnesses! So that can happen. They can take shapes it depends on there power and knowledge some of them are highly powerful. They used to be more in the past they used to come out rape and kill and rob the people but god sent the people that placed them in some sort of jails. They are very good at medic. They have animals like us and even horses regardless of the actual look of the creatures god created for them. Satan walks in one shoe for some reason as been said by some. Hes a very wise Jinn. they can move really fast if they like. some of them can swim and dive. Satan throne as been said on water and there is around it some sort of snakes. he sends his armies from there. they have some sort of horses and weapons been described several times! hes very knowledgeable! but stupid he defy s god! that's why his throne on water because god throne is on water! they live with us in most places some prefer people from the same religion. Some of them know each other by smell they can track it very efficiently so that's why entities can some times follow each others inside our bodies for long distances just like search dogs. Many things to be said Really ill type more next time in god well.