No, dogs should not eat macadamia nuts at all!    

Yes,  generally dogs can eat peanut butter.

Well, not really. Almond is not good for dogs.

Dogs cannot eat mint.

Dogs can eat peanuts; Peanuts are generally safe for dogs.

Marshmallows are high in sugar; very unhealthy food and it is not advisable for you to give any to your dog.

You can give your dog tuna, but you may choose to stay cautions and stick with other fish that are known to be safer.

Cinnamon is not toxic to dogs.

Yes, dogs can eat celery.

Yes, dogs can eat mango.