Re: Seals are raping penguins and scientists don't know why
Raping other species... hmm... Dogs do it. Monkeys do it. Even humans do it. Why not seals? Maybe it's a sign of intelligence. 
Explain your theory to the poor frog...
...then to the children that actually witnessed the event live: https://www.youtube.com/watch?v=pCwk7pP80Z0