What is an animal that is helpless
All animals are helpless when it comes to humans. It is time to take a stand against animal cruelty, change your profile on fb to a blue photo for the next two weeks to show your support.
Bunnies(thier so freaking cute)
None, all will fight amongst the same species. It's another question if they defend themselves against man. As far as a man with a gun is concerned, most animals are really helpless.
I am not sure you what you mean by helpless, but if you mean vulnerable to attack, I would say the sloth.
Snail you never here about them starting trouble or finishing it
Seals, Cows, Dolphins, Goldfish, Worms, Koala Bears, Sloths, There are many animals that are helpless, unless you piss them off, then they can become violent in order to defend themselves.