Riddles about animals

I live in the ocean. I move slowly. I eat clams. I have five arms. I am a...

I have four legs. I am a pet. I hate cats. I bark.

What do you call a bear without an ear?

What animal is best at hitting a baseball?

Where do cows have a party?

What jumps when it walks and sits when it stands?

I have a little tail. My nose is called a snout. I live on a farm. I can say, "Oink-oink" I am a...

I create my lair with earthen string and dispatch my prey with a biting sting. What am I?

I eat other animals. I have a big mouth. I am green. I live in the water. Who am I?

What do you call a calf after it's six months old?