But, evidently, Jim doesn't see it that way and would much rather remain snoozing, judging by the frown on his face after being rudely ... suggests the toy dog breed should be leash-walked ...

However I did think that it was worth a search through the literature to see if it is true that dogs pay more attention to an angry human face than one which is showing more positive emotions.

Do those cute kisses seem a little less appealing ... A study showed that dogs lick their lips more frequently when looking at angry human faces. For dogs, then, lip licking is a natural instinct ...