You must be new to having a dog; she did this because she was so glad to see you & wanted you to love her. They are people-oriented & they get lonesome by themselves. Hey ! You gotta know this, for when she tossed aside her chewie to greet you.
We just got a beagle and we are weening here into being alone and we left here to but supplies at the shops but gave her a bone cow hide thingy about 20cm long before we went out. When we we got back she was in her bed still chewing her bone she ran into our living room and whined for no reason and i have no idea why but she did...