Hi If you are not interested in milking and just want a friendly goat wethers are the best for pets (boy without the parts). Oh! remember goats are heard animals 2 goats are best together not just one.
I live above Calais in Maine and have a small herd of Nigerian Dwarf goats. They are certainly easy keepers and are friendly and affectionate. They are great with little kids as well.
I've had all sizes of goats and definitely think these cuties are the best!
If you are looking for bigger breeds, I know of Boar and Cashimere breeders in Maine. Google "Thyme for Goats" I have met the owners of Dragonfly and they are really nice people.