I've often pondered whether my dog actually misses me or has the same sense of absence/longing that we have.
After a long week of work, with 12 to 14 hour gaps in between (Sometimes I leave at 7am and may not make it home until 9pm), she gets clingy. She lays there looking at me like this while I have my morning coffee.
Yes, she misses you. I had a boyfriend who said that dogs have no concept of time and do not "miss" people. Yeah, they do. When my son and his wife left their dog with me when living in a motel for three months in a distant town (my daughter-in-law was training to be a restaurant manager), he sat by the window for the first month, looking out at the driveway. He stopped looking out the window when I moved, not because he stopped missing them.