My PON's coat is dry and is not as thick as I would like. Should I give fish oil to improve her coat ?

You didn't mention the results of blood testing by your vet. Your PON may have underlying health issues which blood tests may reveal. Fish oil may help in some cases, but you need professional advice.

I have dropped large amounts of money at my vet for gunky ears which return after his treatment. What else can I do about my PON's ears ?

Many times, gunky ears are connected to allergies and you might consider a change of diet. Inhalant allergies are more difficult to deal with, but try organic apple cider vinegar as a wash for ear issues.

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I would like to keep my PON in a puppy cut through hot weather months, but my breeder becomes annoyed when I tell her this.

If you don't show your PON, there is nothing wrong with a puppy cut during summer months.

When I tell my friends in other breeds about how my PON loves veggies, they laugh at me. Are PONS the only veggie loving breed ?

There are lots of other breeds who enjoy veggies. Consider making some new friends.