I have two cats, one of whom is fine with having her claws trimmed. My male cat, however, absolutely will not let me touch his claws. I've tried since he was a kitten, even when he was sound asleep, and he freaks out every time. It honestly doesn't bother me that his claws aren't trimmed, he only scratches his scratching posts and rarely scratches me. Are there any health risks to my cat to not have his claws trimmed? I've heard about ingrown claws, but I'm hoping that's not a common occurrence.