Dog lovers around the world know very well the tricks their lovable fuzzies pull on them for a treat or two. A dog's cute face is something nobody can say no to! Just look at those eyes!
On a side note, did you know that humans percept cuteness as the ratio of eye to face size?! That is why celebrities with big eyes always seem cuter, babies look cuter than teens, and why you can't seem to say no to your pet when he makes the doe eyes at you!