My PONS never fight, why is that ?

Most multi-PON households run smoothly Avoid problems by offering meals, toys, walks,etc.,at the same time. Avoid showing favoritism in all situations. Allow your dominant PONS to lead the pack.

After I removed bones from my PON'S activities, they got along better. Do bones trigger in-fighting ?

Hopefully, you only offer raw bones to your PONS.Cooked bones are dangerous and store bought bones may have high levels of bacteria. In some cases, bones trigger in-fighting.

My vet refuses to follow new vaccination guidelines, what should I do ?

It may be time to switch vets. Ask local dog owners about their vets and policies. 

My PON has gone off his expensive dogfood. What would you suggest ?

You should consult your vet if your PON consistently refuses food and inquire about blood tests. If they come back normal, switch dogfood companies. Sometimes commercial companies change formulas, sometime food has expired, etc. Consider doing a home cooked diet.