It's his kryptonite.

have you had him for his whole life? if not he could have had oranges thrown at him as a puppy, causing him to fear them. just like dogs that were beaten by one owner would be afraid if you lift your hand wrong

my dog get pissed off any time some one closes a door, even from across the house. and shes scared of sneezes. runs away every time.

My dad had a great dane. He was afraid of mice. Said great dane decided to but through a screen door after sticking his nose in a bag of dog food with mice in it, and ripped up my dads water bead. Dogs are weird.

I had a dog who was absolutely terrified of balloons

Whalp, if I ever wanted to invade someone's home who happens to have a guard dog... *rubs my hands together in orange oil and dons my black ski mask*

same with most dogs, it's the citric acid....

Learn more about dogs before you get one. Dogs don't like citrus due to the smell. They have such a sensitive sense of smell, strong smells can actually be painful. You have taken in, for the life of your dog, a very large powerful living being. Rather than mock him for something that is natural, learn about him or find him a new home with someone who knows and can raise his breed appropriately.

My dog was afraid of black people... (she is a rescue dog who was beaten and chained down by a black dude). This dog added a burst of love in my life... I literally would die for her!

lol, you big-dog ppl are always bitching that your dogs aren't dangerous, just bad owners are, and now you're upset that your dog actually has an adorable foible! I hope he plays the submissive to all the dogs in the neighborhood too! You'll be the laughingstock of the town!! bwahaha!!!