Cow - ha! This was fun. Mine would be:1. Alligator2. Python3. Eel4. Crocodile5. Angry chicken
That's fantastic. Eel and chicken almost made my list, too!
Elephant seals scare the bejeezus out of me. They're ginormous! And possibly mentally unstable!1. Terror Bird2. A swarm of angry hornets3. Polar Bear4. Utahraptor5. Dog
The hippo reminds me of a cut squash. It needs more stringy bits, though.
I was charged by a very angry 600kg cow once. Very frightening.