Survival of the Fitest I guess

Well after I got my coffee this am and went to feed the fish and turtles their breakfast, I noticed a ton of flies over on one of the rocks near the bog. Well when I look closer there was one of the tails of my tadpoles, and some inners of what I am assuming used to be one of my frogs! I kept seeing two yesterday, one fully formed and another bigger one that still had part of its tadpole tail. Well I dont see him anymore and I have to say the remains make me think either a bird or maybe a local cat got em! Sad day for the pond, and now I have to worry that something knows there is a snack shop near bye! Could have been the Hawk I saw the other day, the bog was in total disaray with plants almost knocked over!