Riddles about animals

Someone said you sounded like an owl.

I live in lakes and rivers. I eat fish and birds. I have four legs and a long tail. I have lots of pretty teeth. I am a...

I am alive without breath and cold as death. I am never thirsty but always drinking. What am I?

A very vicious dog is tied to a tree. If you came close enough, you'ed lose your head. If he sees you, he'll follow your every step. Your basket ball rolls past the dog. If you are alone, how do you get your ball back with out being mutilated?

I have a face like a tree and skin like the sea. A great beast I am, yet small vermin frighten me. What am I?

I hiss. I can be poisonous. I am long. I have a forked tongue. What am I?

I sleep when you are awake, I am awake when you fall asleep. I can fly but no feathers to aid my flight. What am I?

I had no father, only a grandfather. I shall bear no sons, only daughters. What am I?

I am small. I can be scary. I have eight legs. I spin a web. What am I?

I have a tail. I can fly. I'm covered in colorful feathers. I can whistle and I can talk. I am a...