Death of Litter Mate

Your pup is grieving the loss of it's buddy.
 
I'm so sorry to hear about your loss as well.  It's never easy to lose a friend.

I'm so sorry to hear about your loss.  Sounds to me like your pup is grieving and lonely, dogs recognize a loss of a companion when it happens and will grieve.
 
Give her something else to focus on.  You, another family member, try working with her, taking her on walks, give her a "job" to do, it will keep her occupied and help her re-focus on something besides the loss of her sibling/friend. 

Weren't the dogs allowed in the house to begin with? If so, then this dog is completely without a family pack member for the first time. You and your family are the rest of the pack, so your dog is desperate for comfort from the rest of it's pack.

I agree with Nigguy's Mom, spend some extra time with your dog. He's probably pretty upset. Take him for rides in the car, walks, etc. Everything she said was right on.

Is there a way you can possible play music for him/her where she/he sleeps outside? Or have a TV on? Best would be if you let him sleep by you guys in the house now, he'll be really upset outside alone!

I'm sorry the other dog passed away. That's really sad.

I am very sorry for the loss of your dog, it looks like your remaining dog is looking for security and solid placement within his pack  I agree w/ everyone about keeping him busy, especially if your dog loves rides in the car, by all means take him with you.  Introduce some new toys, and teach him a new obedience command or two.  Nothing wrong with trips to Petsmart, vet's office, groomer, etc even if it's just to stop by and say hello.  Talk to your dog more often, praise and reassure him, and consider letting the dog in the house more.  If he's tracking in dirt, this is an excellent time for extra grooming by you, and if he is not the best mannered, also a good time for those basic commands.  There is a lot of great potential here for you two and this dog, all three will gain greatly if you let it. Times like this, your dog ownership is definately a VERB.  Good luck, and love to all.    Jules

I dont get the wink...?
 
Sorry for the loss... it seems pretty obvious that the dog would need your affection right now.  If all it wants is food are you feeding it enough?  Did they live outside together?  If so, its probably very hard for it right now with the loss.  Good luck.