No.
No.
Yes!
Frogs use the muscles of their eyes and pull their eyeballs down which pushes the pray down. The tongue is rather used for catching and holding the pray. Tongueless frogs (Pipidae) push their food in their mouth with there front legs. This looks strange, as the frogs 'eats with his hands'.
No, frogs usually close their eyes when swallowing their food. The muscles related to their eyes help them in the process of gulping food down their throat.
Yes, you can pray with your eyes open.
Frogs only .
Yes, it is acceptable to pray with your eyes open.
yes frogs do eat small spiders
Frogs eat grasshoppers. At least i know bull frogs and wood frogs do.
they eat orther frogs
Yes, in Christianity, it is acceptable to pray with your eyes open.
No, praying mantises do not eat frogs, they eat insects. Frogs are far too large for a praying mantis to eat them.