Teaching a Havanese puppy "down" 

Yes she is so cute!

Try gerber meat sticks (yes the baby kind). My guy is not a very big eater but loves the meat sticks for clicker training

Try freeze dried meat dog treats. they can be broken really small and are more nutritional for your dog. If your dog just isn't food motivated, try other things. Try rewarding with a toy or some play, or even just giving affection.

Or tiny pieces of boiled chicken. (No salt, pepper, seasonings obviously)