There's actually a kind of cool explanation to why the frog was hitting the screen. Pardon me. im a biology nerd. Frogs actually feed by sight and movement. They immediately try to eat something when it moves in front of them. Someone did an experiment where they strapped a frogs back legs to a turntable of a record player and placed pins around the turntable. Whenever the frog passed the pins, it would jump at them. because the frog was moving, its brain thought the pins were moving. Even after the frog was bloody and had holes in its face, it still kept jumping at the pins. It's an involuntary response apparently. I had a pet frog in high school and read about them a lot