Bizarre Amphibian Behavior

Any thoughts/comments/discussion is welcomed here please. This is the first time that I have witnessed this type of behavior. I guess the male Wood Frogs who didn't get any action with the few females around needed to find something to go after. So they all attacked this poor female Spotted Salamander. I am wondering if they share a similar pharamone that attracts them to her? I witnessed this occuring three seperate times in the same large pool.

 

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