My daschund-chi has recently developed a separation anxiety when my boyfriend leaves. She's been destroying pillows and paper products lately. It seems like this is a new development. She also has an obsessions with chewing on pens. She gets on the computer desk to steal from the pen cup, and somehow ends up walking across the computer and having full conversations on Facebook Chat. So we have given her Nylas to try to advert the chewing and anxiety (they are the only toys that hold up). Any ideas why this would happen suddenly? We locked her in the bathroom today to try to see if that would help, and she did well in there (but we did remove the toilet paper and garbage).