I have an almost 2 year-old Chihuahua who weighs about five pounds. I'm a little bit concerned about her right now because, right before I left for work today, she vomited in her pen. She did not behave any differently before the sickness occurred, but I did give her a dentabone. Unknowingly, I gave her one that was not recommended for a dog her size. She did not actually eat it, though. She licked on it a little and then lost interest. I was wondering if just her licking on the bone could have made her sick. I would appreciate comments from anyone who may have some insight. I'm at work, very concerned because no one is home to watch her.