No. Key word singular. Thats why I capitalized the word "WAS". "Was" being the past tense indicator that obviously I was referring to the frog that had been eaten.
But there are multiple frogs being eaten. The way your question was worded is what is causing confusion. Should have asked "What kind of frog was being used as a feeder?" I'm not bashing you, just playing around. Hope you weren't offended.