[Dailydrool] Dog Won't Eat

[Matt Gold]

Have this puzzler with my 7-year-old hound.  He won't eat dog food.   
He'll eat treats, peanut butter, people food (which I don't really  
give him, save for the odd pizza crust), bully sticks, etc.  Just not  
his food.  I tried putting chicken broth on his food one night and he  
totally chowed down, finishing every drop without hesitation, then  
the next night he licked the broth off the food and spit the food out  
on the floor.  I've tried changing his food, done blood test which  
came out negative.  I don't think there's anything wrong with his  
teeth.  Vet said his gums looked fine, and he has no problem eating  
treats.  He goes to the bathroom normally, so it doesn't seem  
anything intestinal.

He's never been a big eater.  Often he would leave his food for an  
hour or two before picking at it.  Now he's just not even  
acknowledging his food.  I really don't think it's anything medical.   
At first I thought it might be because I recently moved into the  
city, but he's been at my mom's in the "country" for over a week and  
is still not eating.  He'll eat anything other than dog food.  And I  
never fed him table food.  Even scraps or pizza crusts i would wait  
until i was done eating and put it in his bowl, and that was rare.   
Anyone ever come across this with a basset before?  Anyone have  
suggestions?