My two yorkies are quite the opposite. Food is always out and they eat eat eat and want more 

 I can't figure out where its all going. Pia is 2 lbs and eats more then my pekingese who's 15 lbs. My girls are literally pigs. I have to put Snoot (the peke) in the bathroom to eat alone. They sit at the door and scratch and whine and fight each other to get his leftovers. Then they run to their bowel to eat some more. They definately don't eat like birds and they'd probably try to eat a bird if they could get a hold of one