Is donut for vegetarian

Answer 1

No, at least most of the major donuts brands use both milk and butter in their recipes.
http://www.krispykreme.com/nutri.html
https://www.dunkindonuts.com/aboutus/nutrition/

But if you live in NYC, check this place out:
http://www.babycakesnyc.com/

Cheers!

Answer 2

Many doughnuts are vegetarian, but if you are worried you should stay away from jam doughnuts, especially cheap ones, as the jam often contains Gelatin which comes from pigs and cows.

Answer 3

Yes...donuts don't have meat in them.

Answer 4

No, they are suitable for vegetarians.