Fed-up Jock

We're dogsitting this weekend, as my parents are off down south to visit some relatives. They brought him round tonight, and, although he normally seems to enjoy his visits at ours, he always seems a bit sad on the first night. I managed to cheer him up with some play-wrestling (if you lie on the floor, he tries to bite your hands for some reason - not proper biting of course, just play-biting) and a biscuit. He seems to have perked up a bit now.