Yup, mine has always acted like a cat, since the day we brought her home. She was 8 weeks old and would crawl up to my shoulder and curl around my neck. It feels so good. She'll cuddle and we'll rub heads together. My DH thinks we're both abnormal. She also jumps like a cat when she plays. My very first Yorkie and I love her so much!!! So I guess it is definitely a Yorkie trait.