I'm a sheep in love with a dog! I seen it's 40%... Can this actually work?

You need to make efforts to make it out. Sheep is romantic but a bit pessimistic. Dog is loyal and reasonable. Sheep needs dog's support and compassion. However, dog seems to criticize sheep much, which makes the sheep unconfident. If the dog can treat sheep nice and gives the sheep what he/she expects, you two will have a better relationship.