Help making Claws for custom character?

[Yasen]

Hope it's not annoying for me to post again so soon, but--

I had an idea for my custom character. I'd like for him to be able to attack WITHOUT an item, as he is a werehound. He has claws!

The problem is I'm not entirely sure how I can 'animate' him attacking in this way. Or really how to make it possible. Most items are held, whereas this would be his very own hands clawing. I've tried taking a look at the pigmen prefabs to see if I could gather any hints there, but I'm so new to everything that I can't really make heads or tails of it. :c

I tried downloading another mod to see how they made an unbreakable item, and that might work, but again it comes down to how exactly I could 'animate' that when all the items I've seen so far are held items as opposed to empty hands.

Any help would be absolutely lovely!